Need help with a PHP Emailing script

My mobile app calls to a PHP script hosted on my hosting server (godaddy) that sends out a HTML email to a target recipient. The script works for gmail accounts, but hotmail/outlook accounts seem to block my mail.

I could use some help to tell me what changes I need to make to my PHP script or hosting account settings that would let these mails bypass hotmail's spam filters (they are legit emails, not spam!)

Skills: Email Handling, PHP, Web Hosting

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About the Employer:
( 0 reviews ) Mountain View, United States

Project ID: #7889143