I have a problem with html formatted email just recently, and i don't know what could be the possible problem with it,
this is how it works, i have a PHP script that sends email to all club member when a new member joins. if the member chooses to select two clubs, the script will then send email to those chosen clubs informing them about the details of the their new member. but for any reasons there is this one club member told us that they haven't received any emails recently. (it worked before).
I then made a test to solve the issue, sent them two emails one is a bare-bone plain text email. and the second is a HTML Formatted email. the first email works fine, but the second email didn't, though they received the second email but it says "Sorry your E-mail does not support this type of E-mail".
I am guessing it's their isp/email setup configuration that cause this problem. but i need a concrete reason why this happened.
does any one can help with this problem?
and : pardon me with my English, b'coz it is not my native language.