Kube issue using STARTTLS both in and out

[Nicolas North [norðurljósahviða]]

Trying to add a protonmail bridge account [both imap and smtp on
localhost, custom ports, starttls] but cannot figure out how to use
starttls both in and out. i've tried imaps:// [i think this is not my
case] and imap:// but with no success. error is completely generic.

The endpoints are:

IMAP: localhost:1143 STARTTLS
SMTP: localhost:1025 STARTTLS

Thanks

Nz