Sending special chars in email header

Hi,

I've tried to send some UTF-8 chars in the "To" and "From" fields in the header of a message, using Mail::Sender, and I also tried more combinations for setting the encoding and charset, but the chars don't appear correctly in the message.

It should be possible to use those special chars like "Râşniţă" because I was able to send a correct message with Outlook Express, so I must have been doing something wrong.

Can anyone give some hints about how to do that?

Thank you.

Octavian