Index: program/include/rcube_string_replacer.php
===================================================================
--- program/include/rcube_string_replacer.php	(revision 5c1dfb0b115f7873ad0c33c0f514d95653f58263)
+++ program/include/rcube_string_replacer.php	(revision 96e24fab880754858dfe9d3864d400102209918f)
@@ -39,5 +39,5 @@
     // Support unicode/punycode in top-level domain part
     $utf_domain = '[^?&@"\'\\/()\s\r\t\n]+\\.([^\\x00-\\x40\\x5b-\\x60\\x7b-\\x7f]{2,}|xn--[a-z0-9]{2,})';
-    $url1 = '.:;';
+    $url1 = '.:;,';
     $url2 = 'a-z0-9%=#@+?&\\/_~\\[\\]-';