Is there a solution for the utf-8 problem with Xeams? If you try to send emails with german umlauts, the email can't be stored in the sent emails folder on the server. Drafts don't work either. The connection will be closed with a timeout at Ready for append literal.

2017-05-26 07:44:41,849 -  - [     591] S <-- * OK Synametrics IMAP4rev1 server ready 5/26/17 7:44 AM
2017-05-26 07:44:41,852 -  - [     591] C --> 1 capability
2017-05-26 07:44:41,852 -  - [     591] S <-- * CAPABILITY IMAP4rev1 IDLE
2017-05-26 07:44:41,852 -  - [     591] S <-- 1 OK CAPABILITY completed
2017-05-26 07:44:41,858 -  - [     591] C --> 3 login "info@tk-kabel.de" xxxxxx
2017-05-26 07:44:41,858 -  - [     591] S <-- 3 OK LOGIN completed
2017-05-26 07:44:41,860 -  - [     591] C --> 4 append "INBOX" (\Seen) "17-May-2016 10:24:35 +0200" {48346}
2017-05-26 07:44:41,860 -  - [     591] S <-- + Ready for append literal
2017-05-26 07:44:53,411 -  - [     585] ~~~~~~~~~~~~~~ Connection closed: [FORCED: Read timed out]

Is there any config I can change to make this work?