diff --git a/mailpoet/lib/Util/FreeDomains.php b/mailpoet/lib/Util/FreeDomains.php
index 103c5fce7a..72883e974b 100644
--- a/mailpoet/lib/Util/FreeDomains.php
+++ b/mailpoet/lib/Util/FreeDomains.php
@@ -13,20 +13,20 @@ class FreeDomains {
 
     /* Other global domains */
     'email.com', 'fastmail.fm', 'games.com' /* AOL */, 'gmx.net', 'hush.com', 'hushmail.com', 'icloud.com',
-    'iname.com', 'inbox.com', 'lavabit.com', 'love.com' /* AOL */, 'outlook.com', 'pobox.com', 'protonmail.com',
-    'rocketmail.com' /* Yahoo */, 'safe-mail.net', 'wow.com' /* AOL */, 'ygm.com' /* AOL */,
+    'iname.com', 'inbox.com', 'lavabit.com', 'love.com' /* AOL */, 'outlook.com', 'pobox.com', 'protonmail.ch', 'protonmail.com', 'tutanota.de', 'tutanota.com', 'tutamail.com', 'tuta.io',
+    'keemail.me', 'rocketmail.com' /* Yahoo */, 'safe-mail.net', 'wow.com' /* AOL */, 'ygm.com' /* AOL */,
     'ymail.com' /* Yahoo */, 'zoho.com', 'yandex.com',
 
     /* United States ISP domains */
     'bellsouth.net', 'charter.net', 'cox.net', 'earthlink.net', 'juno.com',
 
     /* British ISP domains */
-    'btinternet.com', 'virginmedia.com', 'blueyonder.co.uk', 'freeserve.co.uk', 'live.co.uk',
-    'ntlworld.com', 'o2.co.uk', 'orange.net', 'sky.com', 'talktalk.co.uk', 'tiscali.co.uk',
-    'virgin.net', 'wanadoo.co.uk', 'bt.com',
+    'btinternet.com', 'virginmedia.com', 'blueyonder.co.uk', 'live.co.uk',
+    'ntlworld.com', 'orange.net', 'sky.com', 'talktalk.co.uk', 'tiscali.co.uk',
+    'virgin.net', 'bt.com',
 
     /* Domains used in Asia */
-    'sina.com', 'sina.cn', 'qq.com', 'naver.com', 'hanmail.net', 'daum.net', 'nate.com', 'yahoo.co.jp', 'yahoo.co.kr', 'yahoo.co.id', 'yahoo.co.in', 'yahoo.com.sg', 'yahoo.com.ph', '163.com', '126.com', 'aliyun.com', 'foxmail.com',
+    'sina.com', 'sina.cn', 'qq.com', 'naver.com', 'hanmail.net', 'daum.net', 'nate.com', 'yahoo.co.jp', 'yahoo.co.kr', 'yahoo.co.id', 'yahoo.co.in', 'yahoo.com.sg', 'yahoo.com.ph', '163.com', 'yeah.net', '126.com', '21cn.com', 'aliyun.com', 'foxmail.com',
 
     /* French ISP domains */
     'hotmail.fr', 'live.fr', 'laposte.net', 'yahoo.fr', 'wanadoo.fr', 'orange.fr', 'gmx.fr', 'sfr.fr', 'neuf.fr', 'free.fr',
@@ -38,7 +38,7 @@ class FreeDomains {
     'libero.it', 'virgilio.it', 'hotmail.it', 'aol.it', 'tiscali.it', 'alice.it', 'live.it', 'yahoo.it', 'email.it', 'tin.it', 'poste.it', 'teletu.it',
 
     /* Russian ISP domains */
-    'mail.ru', 'rambler.ru', 'yandex.ru', 'ya.ru', 'list.ru',
+    'bk.ru', 'inbox.ru', 'list.ru', 'mail.ru', 'rambler.ru', 'yandex.by', 'yandex.com', 'yandex.kz', 'yandex.ru', 'yandex.ua', 'ya.ru',
 
     /* Belgian ISP domains */
     'hotmail.be', 'live.be', 'skynet.be', 'voo.be', 'tvcablenet.be', 'telenet.be',
@@ -49,8 +49,11 @@ class FreeDomains {
     /* Domains used in Mexico */
     'yahoo.com.mx', 'live.com.mx', 'hotmail.es', 'hotmail.com.mx', 'prodigy.net.mx',
 
+    /* Domains used in Canada */
+    'yahoo.ca', 'hotmail.ca', 'bell.net', 'shaw.ca', 'sympatico.ca', 'rogers.com',
+
     /* Domains used in Brazil */
-    'yahoo.com.br', 'hotmail.com.br', 'outlook.com.br', 'uol.com.br', 'bol.com.br', 'terra.com.br', 'ig.com.br', 'itelefonica.com.br', 'r7.com', 'zipmail.com.br', 'globo.com', 'globomail.com', 'oi.com.br',
+    'yahoo.com.br', 'hotmail.com.br', 'outlook.com.br', 'uol.com.br', 'bol.com.br', 'terra.com.br', 'ig.com.br', 'r7.com', 'zipmail.com.br', 'globo.com', 'globomail.com', 'oi.com.br',
   ];
 
   public function isEmailOnFreeDomain($email) {