hello,i have a question with mail & utf-8.

1.i set the character of my indexu with utf-8.

2.when i use the function of Tell a Friend,my indexu will send the mail to our mailbox.
some mailbox can not show with correct character of utf-8 and many words take errors,how can i let the mailbox read my mail well and diff. the mail with correct character to show well?

thanks a lot