Debug php multiple Email submission program

I currently have a web site that allows users to input their email addresses. We use those addresses to send out specials. When the addresses are sent from my web page form to the server, they populate a .txt file ([login to view URL]). When we are ready to send out a mass of emails (200 or so) a php email program brings up a form that allows me to put in images and text for the special. When I execute SUBMIT on that page it grabs the addresses [login to view URL] file and sends out the emails. Problem #1 The web site form is not submitting the addresses to the .txt file. (It does however submit them to my server Email client--so I am able to cut and paste the addresses from there to the .txt file. But it does not populate userinfo.txt. It was working until sometime in October of this year. Problem #2. Right now, program sends out the emails to only my address and not the other addresses in the .txt file. I would like someone to find the two errors so I can use this soon. This should be a very quick (15 minutes) debugging job for someone experienced in php/email. Follow-on work will come if I like your work. I want to put the addresses in MySQL but only AFTER I send out the next specials. Payment one-half when it works from your server and rest when I successfully test from my server. Please bid only if you already have experience in email/php. Thanks.