PHP mailer script that avoids spam/junk inbox

We need some assistance putting together a PHP mail script that can avoid the SPAM filters of the major free email providers. We have legitimate email to send to opted in members via this PHP script, and prefer they are not received in their Spam inboxes. As some background, in order to help with you rsuccess - * SPF and DKIM have been enabled for the domain that will be sending the email. * The domain sending the mail is a new domain on a dedicated IP that has not been flagged as a spam sender. * We require appropriate PHP headers to be set. * Script will need to be able to send a sample test message to a minimum of gmail, yahoo and hotmail domains and avoid spam detection. You will be required to write a short snippet of php code that sends the mail with appropriate headers set etc, and additionally modify any settings on the domain/server as may be required in order to acheive the SPAM free outcome. We would like to utilize the PHPMailer wrapper described here: [login to view URL] in order to implement this. (As our application currently uses this). Id really like you to ultimately put together a test script that works.... Then upon getting that working, assist our developer (if needed) to integrate what you've done into our applications mailing function... We are looking to have this task completed in the coming hours. Developers with experience in this specific area, Email marketing configuration will be favored. Please include any such experience in your reply. Should be easy work for those that have experience doing this before.