Subject is garbled

[gecambridge]

There are many examples I can refer to when I use MailSystem.NET,and it's easy to use.That's good.But when I receive emails with a third party mail client ,the subject is always garbled,I have tried to change 'ContentTransferEncoding' and 'Charset',but it turned out failed, The subject I transmitted is simplified Chinese,even if I use the 'utf-8' Charset,it doesn't work.Can you help me ?

[slavat]

This is unmaintained fork. Please use the official version of the library at https://github.com/pmengal/MailSystem.NET