note 23053 added to function.mail

I know this is not an example of code but I have searched the entire website for two days (and other websites) and I can't find anything about this matter. I'm trying to send HTML formated email with a link to a webpage... the problem is that when I change the email format to txt/html the link becomes unusable (nothing happens when it is clicked).... but all other HTML works. I want to send email with a link that is always opened in a new browser window, but nothing I read on these pages seems to work. Can anyone help me -- http://www.php.net/manual/en/function.mail.php http://master.php.net/manage/user-notes.php?action=edit+23053 http://master.php.net/manage/user-notes.php?action=delete+23053 http://master.php.net/manage/user-notes.php?action=reject+23053