Sincing two Gmail accounts

[Proxy]

Hello,

I'm trying to sync two Gmail accounts and having problems with it. If I
try to configure localrepository as Gmail type I'm getting:

 Exception: 'Gmail' repository not supported for local repositories.

Configuring it as IMAP type with

remotehost = imap.gmail.com
ssl = yes
repoteport = 993

doesn't work either.

Error I'm getting:

 Establishing connection to imap.gmail.com:993.
 WARNING: Could not connect via SSL to host 'imap.gmail.com' and non-standard ssl port 993 configured. Make sure you connect to the correct port.

Is there any way to achieve this?