Wikimedia Bugzilla is closed!

Created attachment 12516 [details]
Shows the bad wrapping. Only about 38 chars per line, with an odd cutoff.

UserMailer.php uses wordwrap() which doesn't support unicode. An mb function is needed, otherwise the wrapping is just awful in languages such as Hebrew.

UserMailer.php Line 763: 
$this->body = wordwrap( strtr( $body, $postTransformKeys ), 72 );

Some discussion and suggestions here:
http://stackoverflow.com/questions/3825226/multi-byte-safe-wordwrap-function-for-utf-8