2. Can i remove the first page that is created from faxmail (the one with
the message headers: from, to etc) , so as only the attachment appears to
the fax job?
I've tried to remove the cover page and the header fields as stated in the
man of conf files, but it still creates a blank first page with <br>
character and then the attachment's pages follow.
faxmail -N -n works great. Your email client is probably configured to send HTML messages and it creates a <br> on the top of your message even if you don't type any content.
Just open in text mode the message you just sent and you should find a <br> somewhere. You also can try to configure your email client in plaintext mode instead of html.