Mime vs. Html email ?

[Jawelin]

Hi.
I always used a simple method to send mails in simple HTML format. Infact it was enough adding the following code at the beginning of the header:

PHP Code:

$headers = "MIME-Version: 1.0\r\n";
$headers.= "Content-type: text/html; charset=iso-8859-1\r\n"; 


Well. A month ago, my host server provider changed the SMTP server or whatever else: now is said it supports the full MIME format.
As the result, all emails that always worked fine, now arrive just like simple text, of course fullfilled of un-decoded HTML tags stuff.

I even checked the hack HERE but didn't found anything as simple as before to send these html formatted emails.

Sould anyone put me on the right way ?

Thank you very much.
Bye