If you wish to send the output of this function, simply use it for the headers argument of imap_mail() or mail(). Keep in mind that those functions set the To: and Subject: headers, so including them in the envelope will create double entries.
If you wish to send the output of this function, simply use it for the headers argument of imap_mail() or mail(). Keep in mind that those functions set the To: and Subject: headers, so including them in the envelope will create double entries.