Me too.
I'm receiving mail throught GMAIL. -.-'
I see U are using
Code:
mail($email_to, $vbulletin->options['weasub'], $message, $headers);
to send mail. I think that are available some vb method to do that.
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some minutes later...
Yes, it's available a function that uses rights methods.
Code:
function vbmail($toemail, $subject, $message, $notsubscription = false, $from = '', $uheaders = '', $username = '')
But I dunno if it correctly manages HTML format. I'm testing it.