Bug#921646: kdepim-runtime: akonadi_imap_resource fails to download gmail content

[Charlemagne Lasse <charlemagnelasse@gmail.com>]

Package: kdepim-runtime
Version: 4:18.08.3-1
Severity: important

I've spend now a week trying to get may my gmail imap downloaded.
I am using the standard settings from imap with imap server set to
imap.gmail.com. It downloads the mails  of a single year (2015) and
then shows it stops suddenly

After a couple of minutes it then starts the download again (starting a 0%)
but cancels itself again after a couple of seconds (when it reaches 4%).

AgentBase(akonadi_imap_resource_14): killed
AgentBase(akonadi_imap_resource_14): Unable to connect to the IMAP server.

and sometimes it also only shows:

AgentBase(akonadi_imap_resource_14): Connection lost

I've tried to restart akonoadi, reboot the pc, remove and readd the imap
account and to completely remove the akonadi files and restart the PC. Nothing
worked and it is always it this state.

It is basically impossible to use kmail at the moment for me with gmail. It
was working fine with Debian stretch.

I am only minutes away from throwing my PC against a wall.