{"id":59014,"date":"2024-08-24T22:45:29","date_gmt":"2024-08-24T13:45:29","guid":{"rendered":"https:\/\/kinsta.com\/jp\/?p=59014&#038;preview=true&#038;preview_id=59014"},"modified":"2025-09-29T22:21:22","modified_gmt":"2025-09-29T13:21:22","slug":"secure-email-providers","status":"publish","type":"post","link":"https:\/\/kinsta.com\/jp\/blog\/secure-email-providers\/","title":{"rendered":"\u5b89\u5168\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b914\u9078"},"content":{"rendered":"<p>\u30e1\u30fc\u30eb\u306f\u65e5\u5e38\u751f\u6d3b\u306b\u304a\u3044\u3066\u5927\u304d\u306a\u5f79\u5272\u3092\u62c5\u3063\u3066\u304a\u308a\u3001\u5b89\u5168\u306b\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n<p>\u4e00\u822c\u306b\u3001\u591a\u304f\u306e\u4eba\u306f<a href=\"https:\/\/missiveapp.com\/blog\/time-spent-on-email\" target=\"_blank\" rel=\"noopener noreferrer\">\u5e73\u5747\u3057\u30661\u65e5\u306b\u7d042\u6642\u9593\u4ee5\u4e0a<\/a>\u3001\u4ed5\u4e8b\u3084\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u306e\u30e1\u30fc\u30eb\u306b\u8cbb\u3084\u3057\u3066\u3044\u308b\u3068\u8a00\u308f\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30e1\u30fc\u30eb\u306f\u6a19\u6e96\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u624b\u6bb5\u306e\u4e00\u3064\u3067\u3059\u304c\u3001\u7279\u306bGmail\u3084<a href=\"https:\/\/kinsta.com\/blog\/outlook-alternative\/\">Outlook<\/a>\u306e\u3088\u3046\u306a\u4e3b\u8981\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u5fc5\u305a\u3057\u3082\u5b89\u5168\u3067\u3042\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u30e1\u30fc\u30eb\u306f\u3001\u60aa\u610f\u306e\u3042\u308b\u30e6\u30fc\u30b6\u30fc\u304c\u4f01\u696d\u306e\u6a5f\u5bc6\u60c5\u5831\u3092\u5165\u624b\u3059\u308b\u306e\u306b\u5229\u7528\u3055\u308c\u308b\u4e00\u822c\u7684\u306a\u624b\u6bb5\u3067\u3059\u3002\u30e1\u30fc\u30eb\u3092\u901a\u3058\u3066\u6bce\u65e5\u9001\u53d7\u4fe1\u3055\u308c\u308b\u60c5\u5831\u3092\u4fdd\u8b77\u3059\u308b\u306b\u306f\u3001\u5b89\u5168\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u6b20\u304b\u305b\u307e\u305b\u3093\u3002<\/p>\n<p>\u305d\u3053\u3067\u4eca\u56de\u306f\u3001\u5b89\u5fc3\u3057\u3066\u5229\u7528\u3067\u304d\u308b14\u306e\u5b89\u5168\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002\u30d3\u30b8\u30cd\u30b9\u8981\u4ef6\u306b\u5fdc\u3058\u305f\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u9078\u3073\u306b\u304a\u5f79\u7acb\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<div><\/div><kinsta-auto-toc heading=\"Table of Contents\" exclude=\"last\" list-style=\"arrow\" selector=\"h2\" count-number=\"-1\"><\/kinsta-auto-toc>\n<h2>\u5b89\u5168\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3068\u306f<\/h2>\n<p>\u5b89\u5168\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306b\u306f\u3001\u30e1\u30fc\u30eb\u30a2\u30ab\u30a6\u30f3\u30c8\u3068\u30e1\u30fc\u30eb\u306e\u5185\u5bb9\u3092\u5b89\u5168\u306b\u4fdd\u3064\u305f\u3081\u306e\u6a5f\u80fd\u304c\u7d44\u307f\u8fbc\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u901a\u5e38\u306f\u3001\u9001\u4fe1\u8005\u304b\u3089\u53d7\u4fe1\u8005\u306b\u30e1\u30fc\u30eb\u304c\u5c4a\u304f\u307e\u3067\u306e\u30d7\u30ed\u30bb\u30b9\u306e\u6697\u53f7\u5316\u3001\u3064\u307e\u308a\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316\u306b\u3088\u3063\u3066\u5b89\u5168\u304c\u78ba\u4fdd\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure>\n<p><figure style=\"width: 1600px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/12\/Untitled-9.png\" alt=\"\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316\uff08\u51fa\u5178\uff1aDemand PreVeil\uff09\" width=\"1600\" height=\"859\"><figcaption class=\"wp-caption-text\">\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316\uff08\u51fa\u5178\uff1a<a href=\"\/\/www.preveil.com\/blog\/encrypted-email\/\u201d\">Demand PreVeil<\/a>\uff09<\/figcaption><\/figure><\/figure>\n<p>\u3057\u304b\u3057\u3001\u300c\u5b89\u5168\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u300d\u306e\u660e\u78ba\u306a\u5b9a\u7fa9\u306f\u5b58\u5728\u3057\u306a\u3044\u305f\u3081\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3092\u9078\u3076\u969b\u306b\u306f\u3001\u6697\u53f7\u5316\u306e\u7a2e\u985e\u3084<a href=\"https:\/\/kinsta.com\/blog\/cloud-security\/\">\u305d\u306e\u4ed6\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6163\u884c<\/a>\u3092\u3088\u304f\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306e\u5b89\u5168\u6027\u304c\u91cd\u8981\u306a\u7406\u7531<\/h3>\n<p>\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306e\u5b89\u5168\u6027\u304c\u91cd\u8981\u3067\u3042\u308b\u7406\u7531\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u3001<a href=\"https:\/\/kinsta.com\/blog\/gmail-add-ons\/\">Gmail<\/a>\u3067\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3057\u305f\u5834\u5408\u306e\u30d7\u30ed\u30bb\u30b9\u3092\u6398\u308a\u4e0b\u3052\u3066\u307f\u307e\u3059\u3002<\/p>\n<p>Gmail\u306b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u80fd\u304c\u306a\u3044\u308f\u3051\u3067\u306f\u306a\u304f\u3001Gmail\uff08\u304a\u3088\u3073\u305d\u306e\u4ed6\u306e\u4e3b\u8981\u30b5\u30fc\u30d3\u30b9\uff09\u304b\u3089\u9001\u4fe1\u3055\u308c\u308b\u30e1\u30fc\u30eb\u306f\u3001<a href=\"https:\/\/kinsta.com\/blog\/tls-1-3\/\">Transport Layer Security\uff08TLS\uff09<\/a>\u306e\u6697\u53f7\u5316\u306b\u3088\u3063\u3066\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3068\u30b5\u30fc\u30d0\u30fc\u9593\u306e\u8ee2\u9001\u4e2d\u306b\u6697\u53f7\u5316\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u30b5\u30fc\u30d0\u30fc\u306b\u30e1\u30fc\u30eb\u304c\u5c4a\u304f\u3068\u3001Google\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30ec\u30d9\u30eb\u3067\u30c7\u30fc\u30bf\u3092\u6697\u53f7\u5316\u3057\u307e\u3059\u304c\u3001Google\u306f\u305d\u306e\u5185\u5bb9\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>2017\u5e74\u4ee5\u964d\u3001Google\u304c\u5e83\u544a\u914d\u4fe1\u3092\u76ee\u7684\u306b\u30e1\u30fc\u30eb\u3092\u30b9\u30ad\u30e3\u30f3\u3059\u308b\u3053\u3068\u306f\u306a\u304f\u306a\u308a\u307e\u3057\u305f\u304c\u3001\u30b9\u30de\u30fc\u30c8\u30ea\u30d7\u30e9\u30a4\u306a\u3069\u306e\u6a5f\u80fd\u306e\u305f\u3081\u3001\u4f9d\u7136\u3068\u3057\u3066\u30e1\u30fc\u30eb\u306e\u30b9\u30ad\u30e3\u30f3\u304c\u884c\u308f\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001Gmail\u306a\u3069\u306e\u30b5\u30fc\u30d3\u30b9\u304c\u7b2c\u4e09\u8005\u306b\u30e1\u30fc\u30eb\u3092\u5171\u6709\u3059\u308b\u3053\u3068\u3082\u7c21\u5358\u306b\u3067\u304d\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p>Gmail\u3067\u8ab0\u304b\u306b\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u5834\u5408\u3001\u53d7\u4fe1\u8005\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3082TLS\u3092\u4f7f\u7528\u3057\u3066\u3044\u308c\u3070\u3001Google\u306e\u30b5\u30fc\u30d0\u30fc\u3092\u96e2\u308c\u305f\u5f8c\u3082\u30e1\u30fc\u30eb\u306f\u8ee2\u9001\u4e2d\u3082\u4fdd\u8b77\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001\u53d7\u4fe1\u8005\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u304cTLS\u3092\u4f7f\u7528\u3057\u3066\u3044\u306a\u3051\u308c\u3070\u3001\u6697\u53f7\u5316\u3055\u308c\u305a\u306b\u508d\u53d7\u53ef\u80fd\u306a\u72b6\u614b\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u9001\u4fe1\u4e2d\u306b\u30e1\u30fc\u30eb\u304c\u4fdd\u8b77\u3055\u308c\u305f\u3068\u3057\u3066\u3082\u3001\u53d7\u4fe1\u8005\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306b\u5230\u9054\u3057\u305f\u969b\u3082\u5b89\u5168\u3067\u3042\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u3068\u3044\u3046\u306e\u3082\u3001\u30b5\u30fc\u30d0\u30fc\u4e0a\u3067\u30e1\u30fc\u30eb\u3092\u6697\u53f7\u5316\u3057\u306a\u3044\u30b5\u30fc\u30d3\u30b9\u3082\u3042\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n<h3>\u5b89\u5168\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306b\u3088\u308b\u30e1\u30fc\u30eb\u306e\u4fdd\u8b77<\/h3>\n<p>\u9ad8\u5ea6\u306b\u5b89\u5168\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306f\u3001\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u306f\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u81ea\u4f53\u3082\u30e1\u30fc\u30eb\u3092\u8aad\u3080\u3053\u3068\u304c\u3067\u304d\u306a\u3044\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u6697\u53f7\u5316\u3055\u308c\u305f\u30e1\u30fc\u30eb\u3092\u8aad\u3080\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u306f\u3001\u8a8d\u8a3c\u3092\u53d7\u3051\u305f\u53d7\u4fe1\u8005\u306e\u307f\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u30e1\u30fc\u30eb\u3092\u8a8d\u8a3c\u3057\u3001\u4fdd\u8b77\u3092\u5f37\u5316\u3059\u308b\u305f\u3081\u3001<a href=\"https:\/\/kinsta.com\/blog\/spf-record\/\">Sender Policy Framework\uff08SPF\uff09<\/a>\u304c\u4f7f\u7528\u3055\u308c\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>SPF\u3092\u5229\u7528\u3059\u308b\u3068\u3001\u8ab0\u304b\u304c\u8a8d\u8a3c\u3055\u308c\u305fIP\u30a2\u30c9\u30ec\u30b9\u4ee5\u5916\u304b\u3089\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3057\u3088\u3046\u3068\u3057\u305f\u969b\u3001\u53d7\u4fe1\u8005\u306f\u8a8d\u8a3c\u3055\u308c\u3066\u3044\u306a\u3044\u30e6\u30fc\u30b6\u30fc\u304b\u3089\u306e\u30e1\u30fc\u30eb\u3067\u3042\u308b\u65e8\u306e\u901a\u77e5\u3092\u53d7\u3051\u3001\u62d2\u5426\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306e\u79fb\u884c\u6642\u306b\u306f\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u5909\u66f4\u304c\u5fc5\u8981\uff1f<\/h3>\n<p>\u307b\u3068\u3093\u3069\u306e\u5834\u5408\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3092\u5909\u66f4\u3059\u308b\u969b\u306b\u306f\u3001<a href=\"https:\/\/kinsta.com\/blog\/professional-email-address\/\">\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u65b0\u305f\u306b\u4f5c\u6210<\/a>\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u65e7\u30e1\u30fc\u30eb\u30a2\u30ab\u30a6\u30f3\u30c8\u304c\u5b58\u5728\u3059\u308b\u9650\u308a\u306f\u3001\u65b0\u3057\u304f\u4f5c\u6210\u3057\u305f\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u30e1\u30fc\u30eb\u3092\u8ee2\u9001\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u8ee2\u9001\u3055\u308c\u305f\u30e1\u30fc\u30eb\u306f\u65e7\u30b5\u30fc\u30d3\u30b9\u306e\u30b5\u30fc\u30d0\u30fc\u3092\u7d4c\u7531\u3059\u308b\u305f\u3081\u3001\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u3067\u6697\u53f7\u5316\u3055\u308c\u306a\u3044\u3053\u3068\u3092\u5ff5\u982d\u306b\u304a\u3044\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u5b89\u5168\u306a\u4e00\u90e8\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306f\u3001\u65e7\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u304b\u3089\u306e\u4e57\u308a\u63db\u3048\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u5b89\u5168\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306e\u6761\u4ef6<\/h2>\n<p>\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306b\u306f\u3001\u305d\u308c\u305e\u308c\u7570\u306a\u308b\u7279\u5fb4\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u9078\u3073\u3067\u8003\u616e\u3059\u3079\u304d\u70b9\u3092\u3044\u304f\u3064\u304b\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h3>\u30b5\u30fc\u30d0\u30fc\u306e\u6240\u5728\u5730<\/h3>\n<p>\u7c73\u56fd\u3092\u542b\u3080\u4e00\u90e8\u306e\u56fd\u3067\u306f\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u53ce\u96c6\u3057\u305f\u60c5\u5831\u30c7\u30fc\u30bf\u3092\u53ce\u96c6\u3057\u3001\u5171\u6709\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u653f\u5e9c\u6a5f\u95a2\u3088\u308a\u3082\u30cf\u30c3\u30ad\u30f3\u30b0\u306e\u88ab\u5bb3\u306e\u65b9\u304c\u5fc3\u914d\u3068\u3044\u3046\u5834\u5408\u3001\u3053\u308c\u306f\u3042\u307e\u308a\u91cd\u8981\u3067\u306f\u306a\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u6d3b\u52d5\u5bb6\u306a\u3069\u653f\u5e9c\u306e\u624b\u306b\u30e1\u30fc\u30eb\u304c\u6e21\u3089\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u306b\u306f\u3001\u30b9\u30a4\u30b9\u3001\u30c9\u30a4\u30c4\u3001\u30d9\u30eb\u30ae\u30fc\u3001\u30ce\u30eb\u30a6\u30a7\u30fc\u3001\u30b9\u30a6\u30a7\u30fc\u30c7\u30f3\u3092\u62e0\u70b9\u3068\u3059\u308b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3092\u5229\u7528\u3059\u308b\u306e\u304c\u8ce2\u660e\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u56fd\u3067\u306f\u3001\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u306b\u95a2\u3059\u308b\u3088\u308a\u53b3\u3057\u3044\u6cd5\u5f8b\u304c\u5236\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>\u6697\u53f7\u5316<\/h3>\n<p>\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316\u3068TLS\u306e\u3088\u3046\u306a\u6697\u53f7\u5316\u306e\u9055\u3044\u306f\u524d\u8ff0\u3057\u305f\u3068\u304a\u308a\u3002<\/p>\n<p>\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316\u306b\u3082\u3001\u3055\u307e\u3056\u307e\u306a\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u5bfe\u79f0\u6697\u53f7\u3068\u975e\u5bfe\u79f0\u6697\u53f7\u304c\u3042\u308a\u307e\u3059\u3002\u524d\u8005\u306f\u30c7\u30fc\u30bf\u306e\u6697\u53f7\u5316\u3068\u5fa9\u53f7\u306b\u306f1\u3064\u306e\u9375\u304c\u4f7f\u7528\u3055\u308c\u3001\u9001\u4fe1\u8005\u3068\u53d7\u4fe1\u8005\u304c\u3053\u306e\u9375\u3092\u5171\u6709\u3057\u307e\u3059\u3002<\/p>\n<p>\u5bfe\u3059\u308b\u975e\u5bfe\u79f0\u6697\u53f7\u5316\uff08\u516c\u958b\u9375\u6697\u53f7\u5316\u3068\u3082\u547c\u3070\u308c\u308b\uff09\u306f\u3001\u30c7\u30fc\u30bf\u306e\u6697\u53f7\u5316\u306b\u516c\u958b\u9375\u3068\u79d8\u5bc6\u9375\u306e\u30da\u30a2\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<p>\u9001\u4fe1\u8005\u306f\u53d7\u4fe1\u8005\u306e\u516c\u958b\u9375\u3092\u4f7f\u7528\u3057\u3066\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u6697\u53f7\u5316\u3057\u3001\u3053\u306e\u516c\u958b\u9375\u306f\u3001\u53d7\u4fe1\u8005\u3060\u3051\u304c\u77e5\u3063\u3066\u3044\u308b\u79d8\u5bc6\u9375\u3068\u6570\u5b66\u7684\u306b\u95a2\u9023\u4ed8\u3051\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u5fa9\u53f7\u306b\u306f\u79d8\u5bc6\u9375\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<p>\u975e\u5bfe\u79f0\u6697\u53f7\u5316\u306f\u3001\u5bfe\u79f0\u6697\u53f7\u5316\u3068\u6bd4\u8f03\u3057\u3066\u8907\u96d1\u3067\u901f\u5ea6\u306b\u306f\u304b\u3051\u307e\u3059\u304c\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5c64\u3092\u4e00\u3064\u5897\u3084\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u4e8c\u8981\u7d20\u8a8d\u8a3c\uff082FA\uff09<\/h3>\n<p>\u512a\u308c\u305f\u6697\u53f7\u5316\u3092\u63a1\u7528\u3059\u308b\u30b5\u30fc\u30d3\u30b9\u3092\u9078\u3076\u3053\u3068\u306b\u52a0\u3048\u3066\u3001\u30a2\u30ab\u30a6\u30f3\u30c8\u306e\u8a8d\u8a3c\u60c5\u5831\u304c\u4fdd\u8b77\u3055\u308c\u308b\u3053\u3068\u3082\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><a href=\"https:\/\/kinsta.com\/blog\/wordpress-two-factor-authentication\/\">\u4e8c\u8981\u7d20\u8a8d\u8a3c\uff082FA\uff09<\/a>\u3092\u5229\u7528\u3059\u308b\u3068\u3001\u30d1\u30b9\u30ef\u30fc\u30c9\u4ee5\u5916\u306b\u5225\u306e\u8a8d\u8a3c\u65b9\u6cd5\u304c\u5fc5\u8981\u306b\u306a\u308a\u3001\u4e07\u304c\u4e00\u8ab0\u304b\u306b\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u76d7\u307e\u308c\u3066\u3082\u3001\u30e1\u30fc\u30eb\u30a2\u30ab\u30a6\u30f3\u30c8\u3078\u306e\u4fb5\u5165\u3092\u963b\u6b62\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u307e\u305a\u306f\u81ea\u5206\u304c\u77e5\u3063\u3066\u3044\u308b\u3082\u306e\u3001\u3064\u307e\u308a\u30d1\u30b9\u30ef\u30fc\u30c9\u306a\u3069\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u6b21\u306e\u8a8d\u8a3c\u306b\u306f\u3001\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u306e\u3088\u3046\u306a\u81ea\u5206\u306e\u6240\u6709\u7269\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u4e00\u822c\u7684\u306a\u4e8c\u8981\u7d20\u8a8d\u8a3c\u3068\u3057\u3066\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u540d\u3068\u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u5165\u529b\u5f8c\u3001\u30e1\u30fc\u30eb\u3067\u53d7\u4fe1\u3057\u305f\u30ef\u30f3\u30bf\u30a4\u30e0\u30b3\u30fc\u30c9\u3092\u5165\u529b\u3057\u307e\u3059\u3002<\/p>\n<figure>\n<p><figure style=\"width: 820px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/12\/Untitled-10.png\" alt=\"\u4e8c\u8981\u7d20\u8a8d\u8a3c\u306e\u4f8b\uff08\u51fa\u5178\uff1aImperva\uff09\" width=\"820\" height=\"372\"><figcaption class=\"wp-caption-text\">\u4e8c\u8981\u7d20\u8a8d\u8a3c\u306e\u4f8b\uff08\u51fa\u5178\uff1a<a href=\"https:\/\/www.imperva.com\/learn\/application-security\/2fa-two-factor-authentication\/\">Imperva<\/a>\uff09<\/figcaption><\/figure><\/figure>\n<h3>\u30e1\u30bf\u30c7\u30fc\u30bf\u30d8\u30c3\u30c0\u30fc\u306e\u524a\u9664<\/h3>\n<p>\u30e1\u30fc\u30eb\u306b\u306f\u901a\u5e38\u3001\u53d7\u4fe1\u8005\u3084\u9001\u4fe1\u8005\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3001\u30d6\u30e9\u30a6\u30b6\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u95a2\u3059\u308b\u30e1\u30bf\u30c7\u30fc\u30bf\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n<p>\u5b89\u5168\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306e\u591a\u304f\u306f\u3001\u3053\u306e\u60c5\u5831\u3092\u81ea\u52d5\u7684\u306b\u524a\u9664\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n<h3>\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9<\/h3>\n<p>\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306f\u3001\u305d\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u30e6\u30fc\u30b6\u30fc\u3084\u958b\u767a\u8005\u306b\u516c\u958b\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u3064\u307e\u308a\u3001\u8ab0\u3067\u3082\u88fd\u54c1\u306e\u30b3\u30fc\u30c9\u3092\u8abf\u3079\u3066\u3001\u5b89\u5168\u6027\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u305d\u306e\u4ed6\u306e\u6697\u53f7\u5316\u6a5f\u80fd<\/h3>\n<p>\u4e3b\u8981\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3001\u4f8b\u3048\u3070Gmail\uff08Google\uff09\u3067\u306f\u3001<a href=\"https:\/\/kinsta.com\/blog\/google-workspace\/\">Google \u30ab\u30ec\u30f3\u30c0\u30fc\u3084Google \u30c9\u30e9\u30a4\u30d6<\/a>\u306a\u3069\u306e\u305d\u306e\u4ed6\u306e\u30c4\u30fc\u30eb\u3082\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u5b89\u5168\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306e\u4e2d\u306b\u306f\u3001\u6697\u53f7\u5316\u3055\u308c\u305f\u30ab\u30ec\u30f3\u30c0\u30fc\u3084<a href=\"https:\/\/kinsta.com\/blog\/benefits-of-cloud-computing\/\">\u30af\u30e9\u30a6\u30c9<\/a>\u30b9\u30c8\u30ec\u30fc\u30b8\u306a\u3069\u306e\u63d0\u4f9b\u3057\u3066\u304f\u308c\u308b\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>PC\u3068\u30e2\u30d0\u30a4\u30eb\u3067\u306e\u4f7f\u3044\u3084\u3059\u3055<\/h3>\n<p><a href=\"https:\/\/kinsta.com\/blog\/what-is-encryption\/\">\u30c7\u30fc\u30bf\u306e\u6697\u53f7\u5316<\/a>\u306b\u512a\u308c\u305f\u30b5\u30fc\u30d3\u30b9\u3067\u3042\u3063\u3066\u3082\u3001\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u306f\u91cd\u8981\u3067\u3059\u3002<\/p>\n<p>\u30e2\u30d0\u30a4\u30eb\u7aef\u672b\u3067\u30e1\u30fc\u30eb\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u5834\u5408\u306f\u3001\u30e2\u30d0\u30a4\u30eb\u3067\u306e\u52d5\u4f5c\u304c\u512a\u308c\u308b\u30b5\u30fc\u30d3\u30b9\u3092\u9078\u3093\u3067\u304f\u3060\u3055\u3044\u3002\u307e\u305f\u3001\u304a\u6c17\u306b\u5165\u308a\u306e\u30e1\u30fc\u30eb\u30a2\u30d7\u30ea\u306b\u8ffd\u52a0\u3067\u304d\u308b\u304b\u3082\u30c1\u30a7\u30c3\u30af\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>\u5b89\u5168\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b914\u9078<\/h2>\n<p>\u305d\u308c\u3067\u306f\u3001\u3053\u3053\u304b\u3089\u306f\u5b89\u5168\u6027\u306b\u512a\u308c\u305f\u304a\u3059\u3059\u3081\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u309214\u7a2e\u985e\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002\u4e3b\u306a\u7279\u5fb4\u3084\u4fa1\u683c\u5e2f\u3082\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h3>1. ProtonMail<\/h3>\n<p><a href=\"https:\/\/protonmail.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">ProtonMail<\/a>\u306f\u3001\u6700\u3082\u540d\u306e\u77e5\u308c\u305f\u5b89\u5168\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3067\u3059\u3002<\/p>\n<p>\u30b9\u30a4\u30b9\u306b\u62e0\u70b9\u3092\u7f6e\u304f\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u30b5\u30fc\u30d3\u30b9\u3067\u3001\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u975e\u5bfe\u79f0\u6697\u53f7\u5316\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u30021\u65e5\u306e\u9001\u4fe1\u6570\u304c150\u901a\u672a\u6e80\u3067\u3001\u305d\u308c\u307b\u3069\u591a\u304f\u306e\u30b9\u30c8\u30ec\u30fc\u30b8\u5bb9\u91cf\u3092\u5fc5\u8981\u3068\u3057\u306a\u3044\u5834\u5408\u306f\u3001\u7121\u6599\u3067\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><a href=\"https:\/\/kinsta.com\/blog\/protonmail-vs-gmail\/#protonmail-pros\">ProtonMail\u306e\u512a\u308c\u305f\u6a5f\u80fd<\/a>\u306e\u4e00\u3064\u306b\u30e1\u30fc\u30eb\u306e\u81ea\u52d5\u7834\u68c4\u304c\u3042\u308a\u3001\u30e1\u30fc\u30eb\u306e\u6709\u52b9\u671f\u9650\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u3001\u53d7\u4fe1\u8005\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4\u304b\u3089\u30e1\u30fc\u30eb\u3092\u524a\u9664\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u30c7\u30fc\u30bf\u306f\u3001ProtonMail\u5074\u3082\u30d1\u30b9\u30ef\u30fc\u30c9\u3084\u30e1\u30fc\u30eb\u3092\u89e3\u8aad\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u3044\u300c\u30bc\u30ed\u30a2\u30af\u30bb\u30b9\u6697\u53f7\u5316\u300d\u3067\u4fdd\u5b58\u3055\u308c\u307e\u3059\uff08\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u30ea\u30bb\u30c3\u30c8\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u306a\u3044\uff09\u3002<\/p>\n<p>Android\u3068iOS\u7528\u306e\u30e2\u30d0\u30a4\u30eb\u30a2\u30d7\u30ea\u3082\u5229\u7528\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<figure>\n<p><figure style=\"width: 1366px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/12\/Untitled-11.png\" alt=\"ProtonMail\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4\" width=\"1366\" height=\"768\"><figcaption class=\"wp-caption-text\">ProtonMail\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4<\/figcaption><\/figure><\/figure>\n<p><strong>\u4e3b\u306a\u6a5f\u80fd<\/strong><\/p>\n<ul>\n<li>\u30b9\u30a4\u30b9\u306b\u30b5\u30fc\u30d0\u30fc\u3092\u8a2d\u7f6e<\/li>\n<li>\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9<\/li>\n<li>\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316<\/li>\n<li>\u30bc\u30ed\u30a2\u30af\u30bb\u30b9\u6697\u53f7\u5316<\/li>\n<li>\u30e1\u30fc\u30eb\u306e\u81ea\u5df1\u7834\u58ca<\/li>\n<li>\u30e2\u30d0\u30a4\u30eb\u30a2\u30d7\u30ea<\/li>\n<li>\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\uff08\u6709\u6599\uff09<\/li>\n<\/ul>\n<p><strong>\u6599\u91d1\u30d7\u30e9\u30f3<\/strong><\/p>\n<ul>\n<li><strong>\u7121\u6599<\/strong>\uff1a1\u30e6\u30fc\u30b6\u30fc\u3001500MB\u30011\u65e5150\u901a<\/li>\n<li><strong>Plus<\/strong>\uff1a\u30e6\u30fc\u30b6\u30fc\u306b\u3064\u304d\u6708\u984d5\u30c9\u30eb\u30015GB\u30011\u65e51,000\u901a<\/li>\n<li><strong>Professional<\/strong>\uff1a\u30e6\u30fc\u30b6\u30fc\u306b\u3064\u304d\u6708\u984d8\u30c9\u30eb\uff08\u6700\u59275,000\u30e6\u30fc\u30b6\u30fc\uff09\u30015GB\u3001\u30e1\u30fc\u30eb\u6570\u7121\u5236\u9650<\/li>\n<li><strong>Visionary<\/strong>\uff1a6\u30e6\u30fc\u30b6\u30fc\u3067\u6708\u984d30\u30c9\u30eb\u300120GB\u3001\u30e1\u30fc\u30eb\u6570\u7121\u5236\u9650<\/li>\n<\/ul>\n<h3>2. Mailbox.org<\/h3>\n<p><a href=\"https:\/\/mailbox.org\/en\/\" target=\"_blank\" rel=\"noopener noreferrer\">Mailbox.org<\/a>\u306f\u3001Google\u3084Microsoft\u306e\u4ee3\u66ff\u3092\u63a2\u3057\u3066\u3044\u308b\u30d3\u30b8\u30cd\u30b9\u30d1\u30fc\u30bd\u30f3\u5411\u3051\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3067\u3059\u3002\u30e1\u30fc\u30eb\u306b\u52a0\u3048\u3066\u3001\u6697\u53f7\u5316\u3055\u308c\u305f<a href=\"https:\/\/kinsta.com\/blog\/what-is-cloud-storage\/\">\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8<\/a>\u3001\u30a6\u30a7\u30d6\u4f1a\u8b70\u3001\u30a2\u30c9\u30ec\u30b9\u5e33\u3001\u30ab\u30ec\u30f3\u30c0\u30fc\u3001\u30bf\u30b9\u30af\u30d7\u30e9\u30f3\u30ca\u30fc\u306a\u3069\u3082\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306e\u6a19\u6e96\u3067\u3042\u308b\u516c\u958b\u9375\u6697\u53f7\u5316\u30d7\u30ed\u30b0\u30e9\u30e0\u3001PGP\uff08Pretty Good Privacy\uff09\u3092\u63a1\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u7121\u6599\u30d7\u30e9\u30f3\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u6bd4\u8f03\u7684\u624b\u9803\u306a\u4fa1\u683c\u3067\u5229\u7528\u53ef\u80fd\u3067\u3059\u3002\u307e\u305f\u3001\u30b5\u30fc\u30d3\u30b9\u306e\u767b\u9332\u3068\u652f\u6255\u3044\u306f\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u533f\u540d\u3067\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u74b0\u5883\u306b\u512a\u3057\u3044\u30a8\u30cd\u30eb\u30ae\u30fc\u3067\u904b\u55b6\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3082\u7279\u7b46\u306b\u5024\u3057\u307e\u3059\u3002<\/p>\n<figure>\n<p><figure style=\"width: 1600px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/12\/pasted-image-0-19.png\" alt=\"Mailbox.org\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4\" width=\"1600\" height=\"1000\"><figcaption class=\"wp-caption-text\">Mailbox.org\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4<\/figcaption><\/figure><\/figure>\n<p><strong>\u4e3b\u306a\u7279\u5fb4<\/strong><\/p>\n<ul>\n<li>\u30c9\u30a4\u30c4\u306b\u30b5\u30fc\u30d0\u30fc\u3092\u8a2d\u7f6e<\/li>\n<li>PGP\u6697\u53f7\u5316<\/li>\n<li>\u6697\u53f7\u5316\u3055\u308c\u305f\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8<\/li>\n<li>\u30a6\u30a7\u30d6\u4f1a\u8b70<\/li>\n<li>\u30ab\u30ec\u30f3\u30c0\u30fc<\/li>\n<li>\u74b0\u5883\u306b\u3084\u3055\u3057\u3044<\/li>\n<li>\u6709\u6599\u30d7\u30e9\u30f3\u306e\u307f<\/li>\n<\/ul>\n<p><strong>\u4fa1\u683c<\/strong><\/p>\n<ul>\n<li><strong>Standard<\/strong>\uff1a\u6708\u984d3\u30e6\u30fc\u30ed\u300110GB\u306e\u30e1\u30fc\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8\u30015GB\u306e\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8<\/li>\n<li><strong>Premium<\/strong>\uff1a\u6708\u984d9\u30e6\u30fc\u30ed\u300125GB\u306e\u30e1\u30fc\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8\u300150GB\u306e\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8<\/li>\n<li><strong>Light<\/strong>\uff1a\u6708\u984d1\u30e6\u30fc\u30ed\u30012GB\u306e\u30e1\u30fc\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8\u3001\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8\u306a\u3057<\/li>\n<\/ul>\n<h3>3. HubSpot<\/h3>\n<p><a href=\"https:\/\/www.hubspot.com\/products\/marketing\/email-hosting\">HubSpot<\/a>\u306f\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3084<a href=\"https:\/\/kinsta.com\/blog\/email-tracking-software\/#10-hubspot-premium\">\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30b5\u30fc\u30d3\u30b9<\/a>\u3001\u30ab\u30b9\u30bf\u30de\u30fc\u30b5\u30dd\u30fc\u30c8\u3084\u30b3\u30f3\u30c6\u30f3\u30c4\u7ba1\u7406\u307e\u3067\u3001\u3042\u3089\u3086\u308b\u6a5f\u80fd\u3092\u63d0\u4f9b\u3059\u308b\u30aa\u30fc\u30eb\u30a4\u30f3\u30ef\u30f3\u306e\u30d3\u30b8\u30cd\u30b9\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3068\u3057\u3066\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u95a2\u3057\u3066\u8a00\u3048\u3070\u3001\u4f01\u696d\u3068\u305d\u306e\u9867\u5ba2\u306e\u30c7\u30fc\u30bf\u3092\u5b89\u5168\u304b\u3064\u30bb\u30ad\u30e5\u30a2\u3067\u3042\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b\u305f\u3081\u3001\u591a\u6570\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5f37\u5316\u7b56\u3092\u8b1b\u3058\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>HubSpot\u306e\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30e1\u30fc\u30eb\u30c4\u30fc\u30eb\u3067\u306f\u3001<a href=\"https:\/\/kinsta.com\/blog\/email-authentication\/\">SPF\u3001DKIM\u3001DMARC\u3001\u6700\u65b0\u306eBIMI\u8a8d\u8a3c\u6a19\u6e96<\/a>\u3092\u4f7f\u7528\u3057\u3066\u30e1\u30fc\u30eb\u3092\u8a8d\u8a3c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u500b\u4eba\u60c5\u5831\u306e\u9001\u4fe1\u307e\u305f\u306f\u4fdd\u5b58\u6642\u306b\u306f\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3068\u30c7\u30fc\u30bf\u3092\u3084\u308a\u53d6\u308a\u3092\u884c\u3046\u969b\u306b\u30c7\u30fc\u30bf\u3092\u6697\u53f7\u5316\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3078\u306e\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3084\u610f\u56f3\u3057\u306a\u3044\u30a2\u30af\u30bb\u30b9\u3092\u9632\u6b62\u3059\u308b\u6700\u9ad8\u30af\u30e9\u30b9\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>HubSpot\u306f\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3060\u3051\u3067\u306a\u304f\u3001<a href=\"https:\/\/kinsta.com\/blog\/cms-software\/#5-hubspot-cms--from-300month\">CMS<\/a>\u3001\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u30d3\u30eb\u30c0\u30fc\u306a\u3069\u3001\u30c4\u30fc\u30eb\u5168\u4f53\u3092\u4fdd\u8b77\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_60088\" aria-describedby=\"caption-attachment-60088\" style=\"width: 1330px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-60088 size-full\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2024\/07\/hubspot-email-hosting.png\" alt=\"HubSpot\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\" width=\"1330\" height=\"837\" srcset=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2024\/07\/hubspot-email-hosting.png 1330w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2024\/07\/hubspot-email-hosting-300x189.png 300w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2024\/07\/hubspot-email-hosting-1024x644.png 1024w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2024\/07\/hubspot-email-hosting-768x483.png 768w\" sizes=\"auto, (max-width: 1330px) 100vw, 1330px\" \/><figcaption id=\"caption-attachment-60088\" class=\"wp-caption-text\">HubSpot\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9<\/figcaption><\/figure>\n<p><strong>\u4e3b\u306a\u6a5f\u80fd<\/strong><\/p>\n<ul>\n<li>\u4e8c\u8981\u7d20\u8a8d\u8a3c\uff082FA\uff09<\/li>\n<li>\u4f01\u696d\u5411\u3051\u30b7\u30f3\u30b0\u30eb\u30b5\u30a4\u30f3\u30aa\u30f3\uff08SSO\uff09<\/li>\n<li>SPF\u3001DKIM\u3001DMARC\u3001BIMI\u8a8d\u8a3c\u6a19\u6e96<\/li>\n<li>\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u53d6\u308a\u6d88\u3057<\/li>\n<li>\u30aa\u30fc\u30eb\u30a4\u30f3\u30ef\u30f3\u306eCRM\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3<\/li>\n<li>\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u3001\u55b6\u696d\u3001\u30b5\u30fc\u30d3\u30b9\u30cf\u30d6\u3068\u306e\u30c7\u30fc\u30bf\u540c\u671f<\/li>\n<\/ul>\n<p><strong>\u4fa1\u683c<\/strong><\/p>\n<ul>\n<li>\u7121\u6599\u30c4\u30fc\u30eb\u3042\u308a<\/li>\n<li><strong>Starter<\/strong>\uff1a\u6708\u984d45\u30c9\u30eb\u30671,000\u4ef6\u306e\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30b3\u30f3\u30bf\u30af\u30c8<\/li>\n<li><strong>Professional<\/strong>\uff1a\u6708\u984d800\u30c9\u30eb\u30672,000\u4ef6\u306e\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30b3\u30f3\u30bf\u30af\u30c8<\/li>\n<li><strong>Enterprise<\/strong>\uff1a\u6708\u984d3,200\u30c9\u30eb\u30671\u4e07\u4ef6\u306e\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30b3\u30f3\u30bf\u30af\u30c8<\/li>\n<\/ul>\n<h3>4. Zoho Mail<\/h3>\n<p>Zoho Mail\u306b\u306f\u8ab0\u3067\u3082\u7121\u6599\u3067\u4f7f\u3048\u308b\u30d7\u30e9\u30f3\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u4f01\u696d\u5411\u3051\u306eWorkplace\u30d7\u30e9\u30f3\u3092\u5229\u7528\u3059\u308b\u3068\u3001\u30ef\u30fc\u30d7\u30ed\u3001\u8868\u8a08\u7b97\u30bd\u30d5\u30c8\u3001\u30a6\u30a7\u30d3\u30ca\u30fc\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3001\u30c1\u30e3\u30c3\u30c8\u6a5f\u80fd\u3001\u305d\u306e\u4ed6\u30b3\u30e9\u30dc\u30ec\u30fc\u30b7\u30e7\u30f3\u30c4\u30fc\u30eb\u306a\u3069\u3092\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>S\/MIME\u3068\u547c\u3070\u308c\u308b\u975e\u5bfe\u79f0\u6697\u53f7\u3092\u4f7f\u7528\u3057\u3066\u3001\u9001\u4fe1\u4e2d\u304a\u3088\u3073Zoho\u30b5\u30fc\u30d0\u30fc\u4e0a\u3067\u30e1\u30fc\u30eb\u3092\u6697\u53f7\u5316\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u5404\u30e6\u30fc\u30b6\u30fc\u56fa\u6709\u306e\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u306b\u3088\u308a\u3001\u306a\u308a\u3059\u307e\u3057\u306e\u30e1\u30fc\u30eb\u304c\u9001\u4fe1\u3055\u308c\u308b\u306e\u3092\u9632\u304e\u307e\u3059\u3002<\/p>\n<p><a href=\"https:\/\/www.zoho.com\/mail\/\" target=\"_blank\" rel=\"noopener noreferrer\">Zoho Mail<\/a>\u306f\u4f7f\u3044\u3084\u3059\u3055\u306b\u5b9a\u8a55\u304c\u3042\u308a\u3001\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d1\u30cd\u30eb\u3067\u306f\u3001\u4f01\u696d\u306e\u3059\u3079\u3066\u306e\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306e\u8a2d\u5b9a\u3092\u4e00\u5143\u7ba1\u7406\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure>\n<p><figure style=\"width: 1600px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/12\/pasted-image-0-16.png\" alt=\"Zoho Mail\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4\" width=\"1600\" height=\"928\"><figcaption class=\"wp-caption-text\">Zoho Mail\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4<\/figcaption><\/figure><\/figure>\n<p><strong>\u4e3b\u306a\u6a5f\u80fd<\/strong><\/p>\n<ul>\n<li>\u4e16\u754c\u4e2d\u306b\u30b5\u30fc\u30d0\u30fc\u3092\u914d\u7f6e<\/li>\n<li>\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316<\/li>\n<li>\u30ab\u30ec\u30f3\u30c0\u30fc<\/li>\n<li>\u30b3\u30f3\u30bf\u30af\u30c8\u30dd\u30fc\u30bf\u30eb<\/li>\n<li>\u30b3\u30e9\u30dc\u30ec\u30fc\u30b7\u30e7\u30f3\u30c4\u30fc\u30eb<\/li>\n<li>\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u53d6\u308a\u6d88\u3057<\/li>\n<li>\u30e2\u30d0\u30a4\u30eb\u30a2\u30d7\u30ea<\/li>\n<\/ul>\n<p><strong>\u4fa1\u683c\u8a2d\u5b9a<\/strong><\/p>\n<ul>\n<li><strong>Mail lite<\/strong>\uff1a\u6708\u984d0.9\u30e6\u30fc\u30ed\u30675GB\u3001\u307e\u305f\u306f\u6708\u984d1.13\u30c9\u30eb\u306710GB<\/li>\n<li><strong>Mail premium<\/strong>\uff1a\u30e6\u30fc\u30b6\u30fc\u306b\u3064\u304d\u6708\u984d3.6\u30e6\u30fc\u30ed\u306750GB<\/li>\n<li><strong>Workplace<\/strong>\uff1a\u6708\u984d2.7\u30e6\u30fc\u30ed\u301c\uff08\u8981\u898b\u7a4d\uff09<\/li>\n<\/ul>\n<h3>5. Tuta<\/h3>\n<p><a href=\"https:\/\/tuta.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">Tuta<\/a>\u3082\u307e\u305f\u3001\u91cf\u5b50\u8010\u6027\u306e\u3042\u308b\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u6697\u53f7\u5316\u3068\u4e8c\u8981\u7d20\u8a8d\u8a3c\u3092\u5099\u3048\u305f\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3067\u3059\u3002<\/p>\n<p>Tuta\u306f\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3092\u91cd\u8996\u3057\u3001\u91cf\u5b50\u8010\u6027\u3092\u6301\u3064\u30cf\u30a4\u30d6\u30ea\u30c3\u30c9\u6697\u53f7\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3042\u308bTutaCrypt\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u91cf\u5b50\u8010\u6027\u306e\u3042\u308b\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\uff08Kyber-1024\uff09\u306b\u52a0\u3048\u3066\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u975e\u5bfe\u79f0\u6697\u53f7\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\uff08RSA 2048\u307e\u305f\u306fECC\uff08x25519\uff09\uff09\u3001\u304a\u3088\u3073\u5bfe\u79f0\u6697\u53f7\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\uff08AES 256\uff09\u3092\u7528\u3044\u3066\u3001\u30e1\u30fc\u30eb\u3092\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\uff08E2E\uff09\u3067\u6697\u53f7\u5316\u3002AES 256\u3082\u307e\u305f\u3001\u91cf\u5b50\u8010\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u753b\u50cf\u30d6\u30ed\u30c3\u30af\u3001\u30d8\u30c3\u30c0\u30fc\u524a\u9664\u3001IP\u30a2\u30c9\u30ec\u30b9\u524a\u9664\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u653b\u6483\u306b\u95a2\u3059\u308b\u8b66\u544a\u306a\u3069\u3001\u305d\u306e\u4ed6\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u80fd\u3082\u5145\u5b9f\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u7121\u6599\u30d7\u30e9\u30f3\u3067\u306f\u3001\u975e\u5546\u7528\u5229\u7528\u30671GB\u306e\u30b9\u30c8\u30ec\u30fc\u30b8\u30681\u3064\u306e\u30ab\u30ec\u30f3\u30c0\u30fc\u3092\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure>\n<p><figure style=\"width: 1280px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2025\/09\/Tuta-Mail.png\" alt=\"Tuta\u30e1\u30fc\u30eb\" width=\"1280\" height=\"724\"><figcaption class=\"wp-caption-text\">Tuta\u30e1\u30fc\u30eb<\/figcaption><\/figure><\/figure>\n<p><strong>\u4e3b\u306a\u6a5f\u80fd<\/strong><\/p>\n<ul>\n<li>\u30c9\u30a4\u30c4\u306b\u30b5\u30fc\u30d0\u30fc\u3092\u8a2d\u7f6e<\/li>\n<li>GDPR\u6e96\u62e0<\/li>\n<li>\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9<\/li>\n<li>PC\uff08Linux\u542b\u3080\uff09\u3001\u30e2\u30d0\u30a4\u30eb\u3001\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea<\/li>\n<li>\u91cf\u5b50\u8010\u6027\u306e\u3042\u308b\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u6697\u53f7\u5316<\/li>\n<li>\u975e\u30e6\u30fc\u30b6\u30fc\u306b\u3082\u5171\u6709\u30d1\u30b9\u30ef\u30fc\u30c9\u3067\u6697\u53f7\u5316\u3057\u305f\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u53ef\u80fd<\/li>\n<li>\u4e8c\u8981\u7d20\u8a8d\u8a3c\uff082FA\uff09<\/li>\n<li>\u9375\u691c\u8a3c<\/li>\n<li>\u30e1\u30bf\u30c7\u30fc\u30bf\u306e\u524a\u9664<\/li>\n<li>\u9023\u7d61\u5148\u3068\u30ab\u30ec\u30f3\u30c0\u30fc\u306e\u6697\u53f7\u5316<\/li>\n<li>\u30b5\u30a4\u30c8\u306b\u6697\u53f7\u5316\u3055\u308c\u305f\u304a\u554f\u3044\u5408\u308f\u305b\u30d5\u30a9\u30fc\u30e0\u8a2d\u7f6e<\/li>\n<li>\u7121\u6599\u30d7\u30e9\u30f3\u3067\u3082\u30e1\u30fc\u30eb\u6570\u7121\u5236\u9650<\/li>\n<li>\u6709\u6599\u30d7\u30e9\u30f3\u3067\u306f\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u3092\u8a2d\u5b9a\u3067\u304d\u3001\u540c\u3058\u30c9\u30e1\u30a4\u30f3\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u5236\u9650\u306a\u304f\u8ffd\u52a0\u53ef\u80fd<\/li>\n<\/ul>\n<p><strong>\u4fa1\u683c<\/strong><\/p>\n<ul>\n<li><strong>\u7121\u6599<\/strong>\uff1a1GB\u306e\u30b9\u30c8\u30ec\u30fc\u30b8<\/li>\n<li><strong>Revolutionary<\/strong>\uff1a\u6708\u984d3\u30e6\u30fc\u30ed\u306720GB\u306e\u30b9\u30c8\u30ec\u30fc\u30b8<\/li>\n<li><strong>Legend<\/strong>\uff1a\u6708\u984d8\u30e6\u30fc\u30ed\u3067500GB\u306e\u30b9\u30c8\u30ec\u30fc\u30b8<\/li>\n<li>\u591a\u6570\u30a2\u30c9\u30aa\u30f3\u3042\u308a<\/li>\n<\/ul>\n<h3>6. Posteo<\/h3>\n<p><a href=\"https:\/\/posteo.de\/en\" target=\"_blank\" rel=\"noopener noreferrer\">Posteo<\/a>\u306f\u3001\u533f\u540d\u3067\u767b\u9332\u30fb\u652f\u6255\u3044\u304c\u884c\u3048\u308b\u305f\u3081\u3001\u533f\u540d\u6027\u304c\u91cd\u8981\u306a\u6d3b\u52d5\u5bb6\u3084\u30b8\u30e3\u30fc\u30ca\u30ea\u30b9\u30c8\u306b\u652f\u6301\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u9001\u4fe1\u4e2d\u304a\u3088\u3073\u9001\u4fe1\u5f8c\u306e\u30c7\u30fc\u30bf\u304c\u6697\u53f7\u5316\u3055\u308c\u307e\u3059\u3002\u307e\u305f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316\u306f\u4f7f\u7528\u3055\u308c\u307e\u305b\u3093\u304c\u3001\u6709\u52b9\u306b\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002POP\u3068IMAP\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u305f\u3081\u3001Outlook\u306e\u3088\u3046\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3067Posteo\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4ed6\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u304b\u3089\u79fb\u884c\u3059\u308b\u5834\u5408\u306f\u3001\u79fb\u884c\u30b5\u30fc\u30d3\u30b9\u3092\u4f7f\u3063\u3066\u30a2\u30fc\u30ab\u30a4\u30d6\u3055\u308c\u305f\u30e1\u30fc\u30eb\u3001\u30d5\u30a9\u30eb\u30c0\u69cb\u9020\u3001\u9023\u7d61\u5148\u30ea\u30b9\u30c8\u3001\u304a\u3088\u3073\u30ab\u30ec\u30f3\u30c0\u30fc\u3092\u79fb\u52d5\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u540c\u793e\u306f\u307e\u305f\u3001\u30b5\u30fc\u30d0\u30fc\u3068\u30aa\u30d5\u30a3\u30b9\u3092\u3059\u3079\u3066\u30b0\u30ea\u30fc\u30f3\u30d4\u30fc\u30b9\u30fb\u30a8\u30ca\u30b8\u30fc\u793e\u306e\u30b0\u30ea\u30fc\u30f3\u30a8\u30cd\u30eb\u30ae\u30fc\u3067\u904b\u55b6\u3057\u3066\u3044\u308b\u3068\u516c\u8868\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure>\n<p><figure style=\"width: 1600px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/12\/pasted-image-0-20.png\" alt=\"Posteo\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4\" width=\"1600\" height=\"840\"><figcaption class=\"wp-caption-text\">Posteo\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4<\/figcaption><\/figure><\/figure>\n<p><strong>\u4e3b\u306a\u7279\u5fb4<\/strong><\/p>\n<ul>\n<li>\u30c9\u30a4\u30c4\u306b\u30b5\u30fc\u30d0\u30fc\u3092\u8a2d\u7f6e<\/li>\n<li>\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316\u3092\u8a2d\u5b9a\u53ef\u80fd<\/li>\n<li>\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9<\/li>\n<li>\u4ef6\u540d\u3001\u30d8\u30c3\u30c0\u30fc\u3001\u672c\u6587\u3001\u30e1\u30bf\u30c7\u30fc\u30bf\u3001\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u3092\u6697\u53f7\u5316<\/li>\n<li>POP\u3001<a href=\"https:\/\/kinsta.com\/blog\/free-smtp-server\/\">SMTP<\/a>\u3001IMAP\u30b5\u30dd\u30fc\u30c8<\/li>\n<li>\u533f\u540d\u3067\u306e\u73fe\u91d1\u652f\u6255\u3044<\/li>\n<li>\u6709\u6599\u30d7\u30e9\u30f3\u306e\u307f<\/li>\n<\/ul>\n<p><strong>\u4fa1\u683c<\/strong><\/p>\n<ul>\n<li>\u6708\u984d1\u30e6\u30fc\u30ed\u30672GB\u306e\u30b9\u30c8\u30ec\u30fc\u30b8<\/li>\n<li>\u8ffd\u52a0\u30b9\u30c8\u30ec\u30fc\u30b8\u306f1GB\u306b\u3064\u304d\u6708\u984d0.25\u30e6\u30fc\u30ed<\/li>\n<li>\u305d\u306e\u4ed6\u30a2\u30c9\u30aa\u30f3<\/li>\n<\/ul>\n<h3>7. Thexyz<\/h3>\n<p>\u77e5\u540d\u5ea6\u3053\u305d\u4f4e\u3044\u3082\u306e\u306e\u3001<a href=\"https:\/\/www.thexyz.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">Thexyz<\/a>\u3082\u307e\u305f\u5b89\u5168\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3067\u3059\u3002\u7d44\u307f\u8fbc\u307f\u306e\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001Mailvelope\u3068\u3044\u3046\u30d6\u30e9\u30a6\u30b6\u30a2\u30c9\u30aa\u30f3\u3067OpenPGP\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001<a href=\"https:\/\/kinsta.com\/blog\/email-authentication\/\">\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a3\u30eb\u30bf\u30fc<\/a>\u3084\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306b\u3088\u3063\u3066\u3082\u30e1\u30fc\u30eb\u304c\u4fdd\u8b77\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>Texyz\u306f\u30ab\u30ca\u30c0\u3092\u62e0\u70b9\u3068\u3059\u308b\u30b5\u30fc\u30d3\u30b9\u3067\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u591a\u304f\u306f\u7c73\u56fd\u306b\u8a2d\u7f6e\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u653f\u5e9c\u6a5f\u95a2\u306b\u5bfe\u3059\u308b\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3092\u61f8\u5ff5\u3059\u308b\u5834\u5408\u306f\u5225\u306e\u30b5\u30fc\u30d3\u30b9\u3092\u5229\u7528\u3059\u308b\u306e\u304c\u5f97\u7b56\u3067\u3059\u3002<\/p>\n<p>\u79fb\u884c\u30b5\u30fc\u30d3\u30b9\u3092\u5229\u7528\u3057\u3066\u3001<a href=\"https:\/\/kinsta.com\/blog\/office-365-smtp\/\">Office 365<\/a>\u3084Gmail\u306a\u3069\u306e\u4e3b\u8981\u30b5\u30fc\u30d3\u30b9\u304b\u3089\u30e1\u30fc\u30eb\u3001\u30ab\u30ec\u30f3\u30c0\u30fc\u3001\u9023\u7d61\u5148\u3092\u79fb\u884c\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<figure style=\"width: 1600px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/12\/Untitled-12.png\" alt=\"Thexyz\u306e\u30a2\u30c9\u30ec\u30b9\u5e33\" width=\"1600\" height=\"1042\"><figcaption class=\"wp-caption-text\">Thexyz\u306e\u30a2\u30c9\u30ec\u30b9\u5e33<\/figcaption><\/figure>\n<p><strong>\u4e3b\u306a\u6a5f\u80fd<\/strong><\/p>\n<ul>\n<li>\u7c73\u56fd\u3092\u4e2d\u5fc3\u306b\u30b5\u30fc\u30d0\u30fc\u3092\u8a2d\u7f6e\uff08\u30e8\u30fc\u30ed\u30c3\u30d1\u306b\u3082\u6570\u53f0\u3042\u308a\uff09<\/li>\n<li>IMAP\u3001POP\u3001OpenPGP\u30b5\u30dd\u30fc\u30c8<\/li>\n<li>\u4e8c\u8981\u7d20\u8a8d\u8a3c\uff082FA\uff09<\/li>\n<li>\u30ab\u30ec\u30f3\u30c0\u30fc<\/li>\n<li>\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a3\u30eb\u30bf\u30fc<\/li>\n<li><a href=\"https:\/\/kinsta.com\/blog\/types-of-ssl-certificates\/\">SSL\u6697\u53f7\u5316<\/a><\/li>\n<li>\u524a\u9664\u3057\u305f\u30e1\u30fc\u30eb\u306e\u5fa9\u5143<\/li>\n<li>\u30e2\u30d0\u30a4\u30eb\u30a2\u30d7\u30ea<\/li>\n<li>\u6709\u6599\u30d7\u30e9\u30f3\u306e\u307f<\/li>\n<\/ul>\n<p><strong>\u4fa1\u683c<\/strong><\/p>\n<ul>\n<li><strong>Premium Webmail<\/strong>\uff1a\u6708\u984d2.95\u30c9\u30eb\u306725GB\u306e\u30b9\u30c8\u30ec\u30fc\u30b8<\/li>\n<li>\u30a2\u30c9\u30aa\u30f3\u3042\u308a<\/li>\n<\/ul>\n<h3>8. PrivateMail<\/h3>\n<p><a href=\"https:\/\/privatemail.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">PrivateMail<\/a>\u306f\u3001\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316\u3067\u3042\u308bOpenPGP\u3068\u30e1\u30fc\u30eb\u306e\u81ea\u5df1\u7834\u68c4\u306e\u3088\u3046\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u80fd\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8\u306b\u304a\u3044\u3066\u3001PrivateMail\u306f\u4ed6\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3068\u4e00\u7dda\u3092\u753b\u3057\u3066\u304a\u308a\u3001AES 256\u306b\u3088\u3063\u3066\u30c7\u30fc\u30bf\u304c<a href=\"https:\/\/kinsta.com\/blog\/cloud-security\/\">\u30af\u30e9\u30a6\u30c9\u4e0a\u3067\u5b89\u5168\u306b\u4fdd\u8b77<\/a>\u3055\u308c\u307e\u3059\u3002\u307e\u305f\u30d5\u30a1\u30a4\u30eb\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b\u969b\u306f\u3001\u30ed\u30fc\u30ab\u30eb\u3067\u5fa9\u53f7\u3059\u308b\u3053\u3068\u3082\u3001\u6697\u53f7\u5316\u3057\u305f\u307e\u307e\u306b\u3057\u3066\u304a\u304f\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316\u306b\u3088\u308a\u30d5\u30a1\u30a4\u30eb\u5171\u6709\u3082\u5b89\u5168\u3067\u3059\u3002<\/p>\n<p>\u6b20\u70b9\u3068\u3057\u3066\u306f\u3001\u30b5\u30fc\u30d3\u30b9\u306e\u62e0\u70b9\u304c\u7c73\u56fd\u306b\u7f6e\u304b\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002<\/p>\n<figure>\n<p><figure style=\"width: 740px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/12\/pasted-image-0-21.png\" alt=\"PrivateMail\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4\" width=\"740\" height=\"395\"><figcaption class=\"wp-caption-text\">PrivateMail\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4<\/figcaption><\/figure><\/figure>\n<p><strong>\u4e3b\u306a\u7279\u5fb4<\/strong><\/p>\n<ul>\n<li>\u7c73\u56fd\u306b\u30b5\u30fc\u30d0\u30fc\u3092\u8a2d\u7f6e<\/li>\n<li>\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316<\/li>\n<li>\u5b89\u5168\u306a\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8<\/li>\n<li>\u30e1\u30fc\u30eb\u306e\u81ea\u5df1\u7834\u68c4<\/li>\n<li>\u30d5\u30a1\u30a4\u30eb\u306e\u6697\u53f7\u5316\u306bAES 256\u3092\u63a1\u7528<\/li>\n<li>\u6697\u53f7\u5316\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u5171\u6709<\/li>\n<li>\u6709\u6599\u30d7\u30e9\u30f3\u306e\u307f<\/li>\n<\/ul>\n<p><strong>\u4fa1\u683c<\/strong><\/p>\n<ul>\n<li><strong>Stardard<\/strong>\uff1a\u6708\u984d8.95\u30c9\u30eb\u300110GB\u306e\u30e1\u30fc\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8\u300110GB\u306e\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8<\/li>\n<li><strong>Pro<\/strong>\uff1a\u6708\u984d15.95\u30c9\u30eb\u3001 20GB\u306e\u30e1\u30fc\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8\u300120GB\u306e\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8<\/li>\n<\/ul>\n<h3>9. StartMail<\/h3>\n<p><a href=\"https:\/\/www.startmail.com\/en\/\" target=\"_blank\" rel=\"noopener noreferrer\">StartMail<\/a>\u306f\u3001\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u691c\u7d22\u30a8\u30f3\u30b8\u30f3Startpage\u3092\u904b\u55b6\u3059\u308b\u4f01\u696d\u306b\u3088\u3063\u3066\u7ba1\u7406\u3055\u308c\u3066\u3044\u308b\u5b89\u5168\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3067\u3059\u3002<\/p>\n<p>\u6697\u53f7\u5316\u306bPGP\u3092\u63a1\u7528\u3057\u3066\u304a\u308a\u3001\u4ed6\u306ePGP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u306e\u7d71\u5408\u304c\u53ef\u80fd\u3067\u3059\u3002PGP\u3092\u4f7f\u7528\u3057\u3066\u3044\u306a\u3044\u30e6\u30fc\u30b6\u30fc\u3067\u3042\u3063\u3066\u3082\u3001\u79d8\u5bc6\u306e\u8cea\u554f\u306e\u56de\u7b54\u3092\u5171\u6709\u3059\u308c\u3070\u3001\u6697\u53f7\u5316\u3055\u308c\u305f\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u4fe1\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u7121\u6599\u30d7\u30e9\u30f3\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u7121\u6599\u30d7\u30e9\u30f3\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u300130\u65e5\u9593\u306e\u7121\u6599\u304a\u8a66\u3057\u671f\u9593\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<figure>\n<p><figure style=\"width: 740px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/12\/pasted-image-0-22.png\" alt=\"StartMail\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4\" width=\"740\" height=\"325\"><figcaption class=\"wp-caption-text\">StartMail\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4<\/figcaption><\/figure><\/figure>\n<p><strong>\u4e3b\u306a\u6a5f\u80fd<\/strong><\/p>\n<ul>\n<li>\u30aa\u30e9\u30f3\u30c0\u306b\u30b5\u30fc\u30d0\u30fc\u3092\u8a2d\u7f6e<\/li>\n<li>\u7c21\u5358\u306aPGP\u3067\u306e\u6697\u53f7\u5316<\/li>\n<li>IMAP\u3068SMTP\u306e\u30b5\u30dd\u30fc\u30c8<\/li>\n<li>IP\u30a2\u30c9\u30ec\u30b9\u3068\u30db\u30b9\u30c8\u540d\u3092\u8868\u793a\u3057\u306a\u3044<\/li>\n<li>\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u306e\u4f7f\u7528\u53ef\u80fd<\/li>\n<li>\u6709\u6599\u30d7\u30e9\u30f3\u306e\u307f<\/li>\n<\/ul>\n<p><strong>\u4fa1\u683c<\/strong><\/p>\n<ul>\n<li>\u500b\u4eba\u5411\u3051\uff1a\u5e74\u984d35.99\u30c9\u30eb<\/li>\n<li>\u30d3\u30b8\u30cd\u30b9\u5411\u3051\uff1a\u5e74\u984d59.95\u30c9\u30eb<\/li>\n<\/ul>\n<h3>10. Hushmail<\/h3>\n<p><a href=\"https:\/\/www.hushmail.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">Hushmail<\/a>\u306f\u8001\u8217\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3067\u3001\u4f7f\u3044\u52dd\u624b\u306e\u826f\u3055\u3067\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u6697\u53f7\u5316\u306b\u306fOpenPGP\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>HIPAA\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u3092\u91cd\u8996\u3057\u3066\u304a\u308a\u3001\u7279\u306b\u30d8\u30eb\u30b9\u30b1\u30a2\u696d\u754c\u3067\u652f\u6301\u3055\u308c\u3066\u3044\u307e\u3059\u3002Hushmail for Healthcare\u30d7\u30e9\u30f3\u3067\u306f\u3001\u500b\u4eba\u5065\u5eb7\u60c5\u5831\u3092\u542b\u3080\u30e1\u30fc\u30eb\u3092\u6697\u53f7\u5316\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u76e3\u67fb\u306b\u5f79\u7acb\u3064\u3088\u3046\u3001\u30c9\u30e1\u30a4\u30f3\u5185\u306e\u3059\u3079\u3066\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u9001\u53d7\u4fe1\u3057\u305f\u30e1\u30fc\u30eb\u3092\u8ffd\u8de1\u3059\u308b\u30a2\u30fc\u30ab\u30a4\u30d6\u30a2\u30ab\u30a6\u30f3\u30c8\u304c\u5225\u9014\u4f5c\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u307b\u304b\u306b\u3082\u500b\u4eba\u5411\u3051\u3001\u4e2d\u5c0f\u4f01\u696d\u5411\u3051\u3001\u5f01\u8b77\u58eb\u5411\u3051\u30d7\u30e9\u30f3\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<figure>\n<p><figure style=\"width: 824px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/12\/Untitled-13.png\" alt=\"Hushmail\" width=\"824\" height=\"645\"><figcaption class=\"wp-caption-text\">Hushmail<\/figcaption><\/figure><\/figure>\n<p><strong>\u4e3b\u306a\u6a5f\u80fd<\/strong><\/p>\n<ul>\n<li>\u30ab\u30ca\u30c0\u306b\u30b5\u30fc\u30d0\u30fc\u3092\u8a2d\u7f6e<\/li>\n<li>\u6697\u53f7\u5316\u306bPGP\u3092\u4f7f\u7528<\/li>\n<li>IMAP\u3068POP\u306e\u30b5\u30dd\u30fc\u30c8<\/li>\n<li>\u4e8c\u8981\u7d20\u8a8d\u8a3c\uff082FA\uff09<\/li>\n<li>\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a3\u30eb\u30bf\u30fc<\/li>\n<li>\u5b89\u5168\u306a\u30a6\u30a7\u30d6\u30d5\u30a9\u30fc\u30e0<\/li>\n<li>\u96fb\u5b50\u7f72\u540d<\/li>\n<li>\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30e1\u30c3\u30bb\u30fc\u30b8\u30bb\u30f3\u30bf\u30fc<\/li>\n<li>\u30e2\u30d0\u30a4\u30eb\u30a2\u30d7\u30ea<\/li>\n<li>HIPAA\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u5bfe\u5fdc<\/li>\n<\/ul>\n<p><strong>\u4fa1\u683c<\/strong><\/p>\n<ul>\n<li><strong>Healthcare<\/strong>\uff1a\u6708\u984d9.99\u30c9\u30eb\u301c<\/li>\n<li><strong>Small Business<\/strong>\uff1a\u6708\u984d5.99\u30c9\u30eb\u301c<\/li>\n<li><strong>Law<\/strong>\uff1a\u6708\u984d9.99\u30c9\u30eb\u301c<\/li>\n<li><strong>Personal Use<\/strong>\uff1a\u5e74\u984d49.98\u30c9\u30eb\u301c<\/li>\n<\/ul>\n<h3>11. CounterMail<\/h3>\n<p><a href=\"https:\/\/countermail.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">CounterMail<\/a>\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u529b\u3092\u5165\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u4eca\u56de\u3054\u7d39\u4ecb\u3057\u3066\u3044\u308b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u540c\u69d8\u3001\u6697\u53f7\u5316\u306bPGP\u3092\u4f7f\u7528\u3057\u3001AES\uff08Advanced Encryption Standard\uff09\u3068RSA\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u6697\u53f7\u5316\u3092\u5f37\u5316\u3002\u4e8c\u8981\u7d20\u8a8d\u8a3c\u7528\u306eUSB\u30ad\u30fc\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u3055\u3089\u306b\u30c7\u30fc\u30bf\u3092\u4fdd\u8b77\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u30b9\u30a6\u30a7\u30fc\u30c7\u30f3\u306b\u8a2d\u7f6e\u3055\u308c\u305f\u30b5\u30fc\u30d0\u30fc\u306f\u7279\u5225\u306a\u69cb\u9020\u3092\u6301\u3061\u3001\u30cf\u30fc\u30c9\u30c9\u30e9\u30a4\u30d6\u3092\u4f7f\u7528\u305b\u305aCD-ROM\u304b\u3089\u8d77\u52d5\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u304c\u3088\u308a\u5f37\u5316\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u30d1\u30b9\u30ef\u30fc\u30c9\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u3068\u3057\u3066Safebox\u3082\u642d\u8f09\u3055\u308c\u3066\u304a\u308a\u3001Safebox\u5185\u306e\u3059\u3079\u3066\u306e\u30e6\u30fc\u30b6\u30fc\u540d\u3068\u30d1\u30b9\u30ef\u30fc\u30c9\u306f1\u3064\u306e\u30de\u30b9\u30bf\u30fc\u30d1\u30b9\u30ef\u30fc\u30c9\u3067\u4fdd\u8b77\u3055\u308c\u307e\u3059\u3002\u4e07\u304c\u4e00\u5fd8\u308c\u3066\u3057\u307e\u3063\u3066\u3082\u3001\u518d\u767a\u884c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u3044\u307b\u3069\u53b3\u91cd\u3067\u3059\u3002<\/p>\n<p>CounterMail\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u4eba\u304c\u5468\u308a\u306b\u3044\u308b\u5834\u5408\u306f\u300110\u65e5\u9593\u306e\u7121\u6599\u30c8\u30e9\u30a4\u30a2\u30eb\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure>\n<p><figure style=\"width: 687px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/12\/pasted-image-0-23.png\" alt=\"CounterMail\" width=\"687\" height=\"563\"><figcaption class=\"wp-caption-text\">CounterMail<\/figcaption><\/figure><\/figure>\n<p><strong>\u4e3b\u306a\u6a5f\u80fd<\/strong><\/p>\n<ul>\n<li>\u30b9\u30a6\u30a7\u30fc\u30c7\u30f3\u306b\u30b5\u30fc\u30d0\u30fc\u3092\u8a2d\u7f6e<\/li>\n<li>\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316<\/li>\n<li>\u4e8c\u8981\u7d20\u8a8d\u8a3c\uff082FA\uff09<\/li>\n<li>\u533f\u540d\u306e<a href=\"https:\/\/kinsta.com\/blog\/email-header\/\">\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u30fc<\/a><\/li>\n<li>IP\u30ed\u30b0\u306e\u4fdd\u6301\u306a\u3057<\/li>\n<li>USB\u30ad\u30fc\u30aa\u30d7\u30b7\u30e7\u30f3<\/li>\n<li>IMAP\u30b5\u30dd\u30fc\u30c8<\/li>\n<li>\u30d1\u30b9\u30ef\u30fc\u30c9\u30de\u30cd\u30fc\u30b8\u30e3\u30fc<\/li>\n<li>\u6709\u6599\u30d7\u30e9\u30f3\u306e\u307f<\/li>\n<\/ul>\n<p><strong>\u4fa1\u683c<\/strong><\/p>\n<ul>\n<li>6\u30f6\u6708\u306729\u30c9\u30eb\u30011\u5e74\u306749\u30c9\u30eb\u30012\u5e74\u306779\u30c9\u30eb<\/li>\n<li>1250MB\u306e\u30b9\u30c8\u30ec\u30fc\u30b8\u309219\u30c9\u30eb\u301c\u3067\u8ffd\u52a0\u53ef\u80fd<\/li>\n<\/ul>\n<h3>12. Mailfence<\/h3>\n<p><a href=\"https:\/\/mailfence.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">Mailfence<\/a>\u306f\u3001\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316\u3068\u4e8c\u8981\u7d20\u8a8d\u8a3c\u3092\u53ef\u80fd\u306b\u3059\u308b\u5b89\u5168\u6027\u306e\u9ad8\u3044\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3067\u3059\u3002\u7121\u6599\u30d7\u30e9\u30f3\u306b\u306f1GB\u306e\u30b9\u30c8\u30ec\u30fc\u30b8\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n<p>Mailfence\u306fOpenPGP\u6697\u53f7\u5316\u3092\u63a1\u7528\u3057\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<a href=\"https:\/\/kinsta.com\/blog\/password-managers\/\">\u30d1\u30b9\u30ef\u30fc\u30c9\u30de\u30cd\u30fc\u30b8\u30e3\u30fc<\/a>\u3082\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>Mailfence\u306f\u3001\u5bb6\u65cf\u5185\u3001\u305d\u3057\u3066\u4e8b\u696d\u306b\u95a2\u308f\u308b\u30c1\u30fc\u30e0\u3067\u306e\u4f7f\u7528\u306b\u4fbf\u5229\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3067\u3059\u3002\u30ab\u30ec\u30f3\u30c0\u30fc\u3084\u30c9\u30e9\u30a4\u30d6\u3001\u30ef\u30fc\u30af\u30b9\u30da\u30fc\u30b9\u306a\u3069\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u5171\u6709\u3084\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u306e\u30b3\u30e9\u30dc\u30ec\u30fc\u30b7\u30e7\u30f3\u3082\u6357\u308a\u307e\u3059\u3002Mailfence\u306f\u3001IMAP\u3001SMTP\u3001POP\u306a\u3069\u306e\u6a19\u6e96\u7684\u306a\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<a href=\"https:\/\/kinsta.com\/blog\/gmail-alternative\/\">Gmail\u3084Outlook<\/a>\u3092\u4f7f\u7528\u3057\u3066\u3044\u3066\u3001\u540c\u69d8\u306e\u4f7f\u3044\u52dd\u624b\u3067\u3088\u308a\u5b89\u5168\u306a\u9078\u629e\u80a2\u3092\u6c42\u3081\u308b\u30d7\u30ed\u30d5\u30a7\u30c3\u30b7\u30e7\u30ca\u30eb\u30e6\u30fc\u30b6\u30fc\u306b\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/p>\n<figure style=\"width: 1059px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/12\/Untitled-7.png\" alt=\"Mailfence\" width=\"1059\" height=\"603\"><figcaption class=\"wp-caption-text\">Mailfence<\/figcaption><\/figure>\n<p><strong>\u4e3b\u306a\u6a5f\u80fd<\/strong><\/p>\n<ul>\n<li>\u30d9\u30eb\u30ae\u30fc\u3092\u62e0\u70b9\u3068\u3059\u308b\u30b5\u30fc\u30d0\u30fc<\/li>\n<li>\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316<\/li>\n<li>\u4e8c\u8981\u7d20\u8a8d\u8a3c<\/li>\n<li>POPS\u3001IMAPS\u3001SMTPS\u306e\u30b5\u30dd\u30fc\u30c8<\/li>\n<li>\u30d1\u30b9\u30ef\u30fc\u30c9\u30de\u30cd\u30fc\u30b8\u30e3\u30fc<\/li>\n<li>\u30ab\u30ec\u30f3\u30c0\u30fc<\/li>\n<li>\u30e1\u30c3\u30bb\u30fc\u30b8\u30f3\u30b0<\/li>\n<li>\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u30b9\u30c8\u30ec\u30fc\u30b8<\/li>\n<li>GDPR\u5bfe\u5fdc<\/li>\n<li>\u6709\u6599\u30d7\u30e9\u30f3\u306e\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3<\/li>\n<li>\u30e2\u30d0\u30a4\u30eb\u30a2\u30d7\u30ea<\/li>\n<li>\u30b5\u30fc\u30d3\u30b9\u56fa\u6709\u306e\u30d1\u30b9\u30ef\u30fc\u30c9<\/li>\n<li>IMAP\u3001POP\u3001ActiveSync\u306a\u3069\u306e\u30b5\u30fc\u30d3\u30b9\u306e\u7121\u52b9\u5316<\/li>\n<li>\u30b0\u30eb\u30fc\u30d7\u30b3\u30e9\u30dc\u30ec\u30fc\u30b7\u30e7\u30f3<\/li>\n<\/ul>\n<p><strong>\u4fa1\u683c<\/strong><\/p>\n<ul>\n<li><strong>Free\/\u7121\u6599<\/strong>\uff1a1GB\uff08\u30e1\u30fc\u30eb500MB\u3001\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8500MB\uff09<\/li>\n<li><strong>Base\/\u30d9\u30fc\u30b9<\/strong>\uff1a\u6708\u984d2.5\u30e6\u30fc\u30ed\uff1d11GB\uff08\u30e1\u30fc\u30eb5GB\u3001\u30c9\u30ad\u30e5\u30e1\u30f3\u30c86GB\uff09<\/li>\n<li><strong>Entry\/\u30a8\u30f3\u30c8\u30ea\u30fc<\/strong>\uff1a\u6708\u984d3.5\u30e6\u30fc\u30ed\uff1d40GB\uff08\u30e1\u30fc\u30eb10GB\u3001\u30c9\u30ad\u30e5\u30e1\u30f3\u30c830GB\uff09<\/li>\n<li><strong>Pro\/\u30d7\u30ed<\/strong>\uff1a\u6708\u984d9.5\u30e6\u30fc\u30ed\uff1d78GB\uff08\u30e1\u30fc\u30eb30GB\u3001\u30c9\u30ad\u30e5\u30e1\u30f3\u30c848GB\uff09<\/li>\n<li><strong>Ultra\/\u30a6\u30eb\u30c8\u30e9<\/strong>\uff1a\u6708\u984d29\u30e6\u30fc\u30ed\uff1d225GB\uff08\u30e1\u30fc\u30eb60GB\u3001\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8165GB\uff09<\/li>\n<\/ul>\n<h3>13. Runbox<\/h3>\n<p><a href=\"https:\/\/runbox.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">Runbox<\/a>\u306f\u30ce\u30eb\u30a6\u30a7\u30fc\u3092\u62e0\u70b9\u3068\u3059\u308b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3067\u3001PGP\u3068\u4e8c\u8981\u7d20\u8a8d\u8a3c\u3067\u30e1\u30fc\u30eb\u3092\u4fdd\u8b77\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n<p>IP\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u30a2\u30ab\u30a6\u30f3\u30c8\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u8a31\u53ef\u3057\u3001\u30ed\u30b0\u30a4\u30f3\u306b\u6210\u529f\u3057\u305f\u6700\u65b0\u306e\u4e00\u89a7\u3001\u304a\u3088\u3073\u5931\u6557\u3057\u305f\u4e00\u89a7\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>Runbox\u306f\u3001\u502b\u7406\u7684\u3067\u74b0\u5883\u306b\u3084\u3055\u3057\u3044\u30b5\u30fc\u30d3\u30b9\u306b\u3053\u3060\u308f\u308a\u3001\u6c34\u529b\u767a\u96fb\u6240\u304b\u3089\u306e\u518d\u751f\u53ef\u80fd\u30a8\u30cd\u30eb\u30ae\u30fc\u3067\u30b5\u30fc\u30d0\u30fc\u306b\u96fb\u529b\u3092\u4f9b\u7d66\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure>\n<p><figure style=\"width: 1078px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/12\/pasted-image-0-17.png\" alt=\"Runbox\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4\" width=\"1078\" height=\"1170\"><figcaption class=\"wp-caption-text\">Runbox\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4<\/figcaption><\/figure><\/figure>\n<p><strong>\u4e3b\u306a\u7279\u5fb4<\/strong><\/p>\n<ul>\n<li>\u30ce\u30eb\u30a6\u30a7\u30fc\u306b\u30b5\u30fc\u30d0\u30fc\u3092\u8a2d\u7f6e<\/li>\n<li>\u4e8c\u8981\u7d20\u8a8d\u8a3c\uff082FA\uff09<\/li>\n<li>IP\u8a31\u53ef\u30ea\u30b9\u30c8<\/li>\n<li>\u30a6\u30a4\u30eb\u30b9\u304a\u3088\u3073\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a3\u30eb\u30bf\u30fc<\/li>\n<li>POP\u3001IMAP\u3001SMTP\u3001WAP\u306e\u30b5\u30dd\u30fc\u30c8<\/li>\n<li>\u6709\u6599\u30d7\u30e9\u30f3\u306e\u307f<\/li>\n<\/ul>\n<p><strong>\u4fa1\u683c<\/strong><\/p>\n<ul>\n<li><strong>Micro<\/strong>\uff1a\u5e74\u984d19.95\u30c9\u30eb\u30672GB\u306e\u30e1\u30fc\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8\u3001200MB\u306e\u30d5\u30a1\u30a4\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8<\/li>\n<li><strong>Mini<\/strong>\uff1a\u5e74\u984d34.95\u30c9\u30eb\u306710GB\u306e\u30e1\u30fc\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8\u30011GB\u306e\u30d5\u30a1\u30a4\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8<\/li>\n<li><strong>Medium<\/strong>\uff1a\u5e74\u984d49.95\u30c9\u30eb\u306725GB\u306e\u30e1\u30fc\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8\u30012GB\u306e\u30d5\u30a1\u30a4\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8<\/li>\n<li><strong>Max<\/strong>\uff1a\u5e74\u984d79.95\u30c9\u30eb\u306750GB\u306e\u30e1\u30fc\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8\u30015GB\u306e\u30d5\u30a1\u30a4\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8<\/li>\n<\/ul>\n<h3>14. Kolab Now<\/h3>\n<p><a href=\"https:\/\/kolabnow.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">Kolab Now<\/a>\u306f\u5b89\u5168\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306b\u52a0\u3048\u3066\u3001\u30ab\u30ec\u30f3\u30c0\u30fc\u3001\u30e1\u30e2\u3001\u30a6\u30a7\u30d6\u4f1a\u8b70\u306a\u3069\u306e\u30c4\u30fc\u30eb\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30b9\u30a4\u30b9\u306b\u62e0\u70b9\u3092\u7f6e\u304f\u540c\u793e\u306f\u3001\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316\u3067GDPR\u3001HIPAA\u3001PCI\u306b\u6e96\u62e0\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure>\n<p><figure style=\"width: 1454px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/12\/pasted-image-0-18.png\" alt=\"Kolab Now\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4\" width=\"1454\" height=\"815\"><figcaption class=\"wp-caption-text\">Kolab Now\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4<\/figcaption><\/figure><\/figure>\n<p><strong>\u4e3b\u306a\u7279\u5fb4<\/strong><\/p>\n<ul>\n<li>\u30b9\u30a4\u30b9\u306b\u30b5\u30fc\u30d0\u30fc\u3092\u8a2d\u7f6e<\/li>\n<li>\u30a8\u30f3\u30c9\u30c4\u30fc\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316<\/li>\n<li>\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9<\/li>\n<li>\u30ab\u30ec\u30f3\u30c0\u30fc<\/li>\n<li>\u30ce\u30fc\u30c8<\/li>\n<li>\u9023\u7d61\u5148<\/li>\n<li>\u30a6\u30a7\u30d6\u4f1a\u8b70<\/li>\n<\/ul>\n<p><strong>\u4fa1\u683c<\/strong><\/p>\n<ul>\n<li><strong>Just Email<\/strong>\uff1a\u6708\u984d5.00\u30b9\u30a4\u30b9\u30d5\u30e9\u30f3<\/li>\n<li><strong>Full Kolab<\/strong>\uff1a\u6708\u984d9.90\u30b9\u30a4\u30b9\u30d5\u30e9\u30f3<\/li>\n<\/ul>\n<h2>\u30d3\u30b8\u30cd\u30b9\u8981\u4ef6\u306b\u9069\u3057\u305f\u5b89\u5168\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3092\u9078\u307c\u3046<\/h2>\n<p>\u3069\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u304c\u9069\u5207\u3067\u3042\u308b\u304b\u306f\u3001\u30d3\u30b8\u30cd\u30b9\u8981\u4ef6\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u304c\u3001\u4ee5\u4e0b\u3082\u5ff5\u982d\u306b\u304a\u3044\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul>\n<li>\u7dcf\u5408\u7684\u306b\u5b89\u5168\u306a\u30b5\u30fc\u30d3\u30b9\u306a\u3089\u2500<strong>ProtonMail<\/strong>\u307e\u305f\u306f<strong>Tuta<\/strong><\/li>\n<li>\u7121\u6599\u3067\u4f7f\u3048\u308b\u5b89\u5168\u306a\u30b5\u30fc\u30d3\u30b9\u306a\u3089\u2500<b>ProtonMail<\/b><\/li>\n<li>\u6700\u3082\u5b89\u5168\u306a\u30b5\u30fc\u30d3\u30b9\u306a\u3089\u2500<strong>Countermail<\/strong><\/li>\n<li>\u4f01\u696d\u5411\u3051\u306e\u30b3\u30e9\u30dc\u30ec\u30fc\u30b7\u30e7\u30f3\u6a5f\u80fd\u3092\u5099\u3048\u305f\u30b5\u30fc\u30d3\u30b9\u306a\u3089\u2500<strong>Zoho Mail<\/strong><\/li>\n<\/ul>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u30e1\u30fc\u30eb\u306f\u7279\u306b\u30d3\u30b8\u30cd\u30b9\u306b\u304a\u3051\u308b\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u6b20\u304b\u305b\u307e\u305b\u3093\u304c\u3001\u6b20\u70b9\u3082\u3042\u308a\u307e\u3059\u3002\u6a5f\u5bc6\u60c5\u5831\u3092\u30e1\u30fc\u30eb\u3067\u9001\u4fe1\u3059\u308b\u5834\u5408\u306b\u306f\u8981\u6ce8\u610f\u3002\u73fe\u5728\u5229\u7528\u3057\u3066\u3044\u308b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u304c\u672c\u5f53\u306b\u5b89\u5168\u3067\u3042\u308b\u304b\u3092\u8a55\u4fa1\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u4eca\u56de\u3054\u7d39\u4ecb\u3057\u305f\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3078\u306e\u79fb\u884c\u3092\u691c\u8a0e\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u4f01\u696d\u306e\u30e1\u30fc\u30eb\u6226\u7565\u306b\u95a2\u9023\u3057\u3066\u3001<a href=\"https:\/\/kinsta.com\/blog\/email-marketing-software\/\">\u304a\u3059\u3059\u3081\u306e\u30e1\u30fc\u30eb\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2<\/a>\u3084<a href=\"https:\/\/kinsta.com\/blog\/email-marketing-tips\/\">\u30e1\u30fc\u30eb\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u306e\u30d2\u30f3\u30c8<\/a>\u3082\u3054\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30e1\u30fc\u30eb\u306f\u65e5\u5e38\u751f\u6d3b\u306b\u304a\u3044\u3066\u5927\u304d\u306a\u5f79\u5272\u3092\u62c5\u3063\u3066\u304a\u308a\u3001\u5b89\u5168 &#8230;<\/p>\n","protected":false},"author":103,"featured_media":59015,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kinsta_gated_content":false,"_kinsta_gated_content_redirect":"","footnotes":""},"tags":[],"topic":[804,767],"class_list":["post-59014","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","topic-security-tips","topic-email-marketing-tips"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.6 (Yoast SEO v24.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u30102026 \u5e74\u7248\u3011\u5b89\u5168\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b914\u9078<\/title>\n<meta name=\"description\" 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