Every new email results in a new idling connection to IMAP server

[vige]

Describe the bug
Every time I get a new email, mind2 opens a new connection to my IMAP server. The connection starts idling. After a while, I can no longer read my email using another client in the same network, as my email server says:

Jun 17 12:02:56 imap-login: Info: Disconnected: Maximum number of connections from user+IP exceeded (mail_max_userip_connections=10): user=<username>, method=PLAIN, rip=x.x.x.x, lip=y.y.y.y, TLS, session=<z>

To Reproduce
Steps to reproduce the behavior:

1. Create new email account in message center, using manual setup
2. Receive 10 emails
3. Try to read emails from the same same network, which is natted behind one IP address

Expected behavior
Having my email account set up in mind2 should not make it impossible for me to read my email using some other email client

Environment(please complete the following information):

• OS: Sailfish OS with venho
• Version 0.4.6