Hi. I'm not able to answer to you in forums, I'm getting insufficient privileges error (strange).
Your question about PHP mail is answered to me: you have to set content-type header in order to be able to send email. I'm not able to test it because my (sub)domain is still off.
Your question about PHP mail is answered to me: you have to set content-type header in order to be able to send email. I'm not able to test it because my (sub)domain is still off.