Has anyone else ever had this problem? I have a form that uses mail() to send form info to an email. It sends mail just fine to any email account I try except for my email domain that uses Google Apps. Does Gmail have something against HTML formatting from a php generated email?

It's possible that the mail is in your spam folder?

You can try to send a email with only plain text, and see if it works well?

doesn't send it or you don't receive it?

Doesn't receive it, I'm guessing. Every time I send it, I get a "success" message. I commented out the MIME and content type headers. I changed the $to email address, and it showed up right away in a different inbox.

lots of possibilities

No reverse DNS lookup.
The headers look like spam message.

and a few other things.

Hmmmm... I guess as long as I can get the mail from at least one email address its not detrimental. Thanks for the input!

from php manual for mail():

Return Values
Returns TRUE if the mail was successfully accepted for delivery, FALSE otherwise.

It is important to note that just because the mail was accepted for delivery, it does NOT mean the mail will actually reach the intended destination.