...eliminate extra quotes:
$msg = "Dear user,\n\n Thank you for taking an interest in the GoogleMAX high revenue keywords list. We thank you very much for joining, and will be emailing you with updated lists as they come!\n\n Your temporary download link is:\n\n <a href="http://www.o-h-s.com/temp9403t28.txt\n\n" target="_blank">[url]http://www.o-h-s.com/temp9403t28.txt\n\n[/url]</a> Please note, that this link will expire in 1 hour.\n\n
Should be:
$msg = "Dear user,\n\n Thank you for taking an interest in the GoogleMAX high revenue keywords list. We thank you very much for joining, and will be emailing you with updated lists as they come!\n\n Your temporary download link is:\n\n <a href=\"http://www.o-h-s.com/temp9403t28.txt\n\n\" target=\"_blank\">[url]http://www.o-h-s.com/temp9403t28.txt\n\n[/url]</a> Please note, that this link will expire in 1 hour.\n\n
And
$msg = "Hey,\n\n I found this awesome new program, that gives you a list of Google AdSense keywords that pay anywhere from $5 - $84 per click! It's 100% free! Check it out!\n\n <a href="http://www.o-h-s.com/" target="_blank">[url]http://www.o-h-s.com/[/url]</a> \n\n Thanks!";
Should be:
$msg = "Hey,\n\n I found this awesome new program, that gives you a list of Google AdSense keywords that pay anywhere from $5 - $84 per click! It's 100% free! Check it out!\n\n <a href=\"http://www.o-h-s.com/\" target=\"_blank\">[url]http://www.o-h-s.com/[/url]</a> \n\n Thanks!";
Also, not a problem but I would make it more efficient...
mysql_query("INSERT INTO emails(email) VALUES('$reg')");
mysql_query("INSERT INTO emails(email) VALUES('$first')");
mysql_query("INSERT INTO emails(email) VALUES('$second')");
mysql_query("INSERT INTO emails(email) VALUES('$third')");
Like this:
mysql_query("INSERT INTO emails(email) VALUES('$reg','$first','$second','$third')");