Mail is sent by Web page?
If your page is in (for example) UTF-8 codepage then you shoul alsa add Content-Type header in mail sent from that page.
So, add the following header to mail:
Code:
Content-Type: text/html; charset=UTF-8
.
If your page is iso-8859-1 then header shoul be:
Code:
Content-Type: text/html; charset=iso-8859-1
.