[Dovecot] Marking message read after delivering to folder

[Nikolay Shopik]

I've copying messages automatically to sent folder if it sent via our 
SMTP. Problem is Deliver can't mark message as read on deliver. Does 
that possible to accomplish using global sieve rule? I'm not familiar 
with sieve code syntax, know very basics.
Also I know there different implementation in Sieve between 1.0, 1.1 and 
1.2.

Thanks