{"id":22793,"date":"2021-07-24T21:12:26","date_gmt":"2021-07-24T21:12:26","guid":{"rendered":"https:\/\/www.devopsschool.com\/blog\/?p=22793"},"modified":"2021-07-24T21:19:28","modified_gmt":"2021-07-24T21:19:28","slug":"top-21-free-open-source-tools-for-mail","status":"publish","type":"post","link":"https:\/\/www.devopsschool.com\/blog\/top-21-free-open-source-tools-for-mail\/","title":{"rendered":"Top 21 free open source tools for Mail"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">Mail<\/h1>\n\n\n\n<p>\u00a0\u00a0\ud83d\udd38\u00a0<a href=\"https:\/\/luxsci.com\/smtp-tls-checker\" target=\"_blank\" rel=\"noopener\"><strong>smtp-tls-checker<\/strong><\/a>\u00a0&#8211; check an email domain for SMTP TLS support.<br>\u00a0\u00a0\ud83d\udd38\u00a0<a href=\"https:\/\/mxtoolbox.com\/SuperTool.aspx\" target=\"_blank\" rel=\"noopener\"><strong>MX Toolbox<\/strong><\/a>\u00a0&#8211; all of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool.<br>\u00a0\u00a0\ud83d\udd38\u00a0<a href=\"https:\/\/www.checktls.com\/index.html\" target=\"_blank\" rel=\"noopener\"><strong>Secure Email<\/strong><\/a>\u00a0&#8211; complete email test tools for email technicians.<br>\u00a0\u00a0\ud83d\udd38\u00a0<a href=\"http:\/\/www.blacklistalert.org\/\" target=\"_blank\" rel=\"noopener\"><strong>blacklistalert<\/strong><\/a>\u00a0&#8211; checks to see if your domain is on a Real Time Spam Blacklist.<br>\u00a0\u00a0\ud83d\udd38\u00a0<a href=\"http:\/\/multirbl.valli.org\/\" target=\"_blank\" rel=\"noopener\"><strong>MultiRBL<\/strong><\/a>\u00a0&#8211; complete IP check for sending Mailservers.<br>\u00a0\u00a0\ud83d\udd38\u00a0<a href=\"https:\/\/dkimvalidator.com\/\" target=\"_blank\" rel=\"noopener\"><strong>DKIM SPF &amp; Spam Assassin Validator<\/strong><\/a>\u00a0&#8211; checks mail authentication and scores messages with Spam Assassin.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Secure Webmail Providers<\/h1>\n\n\n\n<p>&nbsp;&nbsp;\ud83d\udd38&nbsp;<a href=\"https:\/\/countermail.com\/\" target=\"_blank\" rel=\"noopener\"><strong>CounterMail<\/strong><\/a>&nbsp;&#8211; online email service, designed to provide maximum security and privacy.<br>&nbsp;&nbsp;\ud83d\udd38&nbsp;<a href=\"http:\/\/mail2tor.com\/\" target=\"_blank\" rel=\"noopener\"><strong>Mail2Tor<\/strong><\/a>&nbsp;&#8211; is a Tor Hidden Service that allows anyone to send and receive emails anonymously.<br>&nbsp;&nbsp;\ud83d\udd38&nbsp;<a href=\"https:\/\/tutanota.com\/\" target=\"_blank\" rel=\"noopener\"><strong>Tutanota<\/strong><\/a>&nbsp;&#8211; is the world&#8217;s most secure email service and amazingly easy to use.<br>&nbsp;&nbsp;\ud83d\udd38&nbsp;<a href=\"https:\/\/protonmail.com\/\" target=\"_blank\" rel=\"noopener\"><strong>Protonmail<\/strong><\/a>&nbsp;&#8211; is the world&#8217;s largest secure email service, developed by CERN and MIT scientists.<br>&nbsp;&nbsp;\ud83d\udd38&nbsp;<a href=\"https:\/\/www.startmail.com\/en\/\" target=\"_blank\" rel=\"noopener\"><strong>Startmail<\/strong><\/a>&nbsp;&#8211; private &amp; encrypted email made easy.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mail \u00a0\u00a0\ud83d\udd38\u00a0smtp-tls-checker\u00a0&#8211; check an email domain for SMTP TLS support.\u00a0\u00a0\ud83d\udd38\u00a0MX Toolbox\u00a0&#8211; all of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool.\u00a0\u00a0\ud83d\udd38\u00a0Secure Email\u00a0&#8211; complete email test tools&#8230; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[2],"tags":[],"class_list":["post-22793","post","type-post","status-publish","format-standard","hentry","category-uncategorised"],"_links":{"self":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/22793","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/comments?post=22793"}],"version-history":[{"count":2,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/22793\/revisions"}],"predecessor-version":[{"id":22805,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/22793\/revisions\/22805"}],"wp:attachment":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/media?parent=22793"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/categories?post=22793"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/tags?post=22793"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}