i personally use thunderbird for the past 7 years already and it works fine.
The only thing i notice with imap and certain web mail services is that the synchronization,
can be a little bit laggy sometimes.
But other than that it generally works fine.
Evolution is another popular mail client that works pretty well.
I donāt think I would have thought to ask them if they liked it.
postfix - is configured connecting to the pm bridge like a client. It runs on the same (VM) where the bridge is. So mailing applications connect to postfix, technically.
It has been a long time since I configured this so Iāll imagine there was a reason, most likely that the bridge didnāt like being connected to from anywhere but localhost.
These are the postfix setup guides I kept references for:
relayhost = [localhost]:1025 # your protonmail bridge smtp port
& sasl_passwd contains the connection credentials to the bridge.
postfix can then be configured to authorise how you like, but in my case sufficient for anon on those hosts specified by mynetworks = as Iām happy with the security otherwise, that only pfsense can spam, only me at 3am with VPNās hopping up and down.
I had been using Thunderbird since the project started. Although with all of the woke BS going on in the Mozilla Foundation Iāve switched over to Betterbird.
(I wonder if there will be an email-offshoot of Ladybird Browser when that has a regular release)
Also thunderbird here⦠Mainly came about as a way to use the same interface on Linux and Windows during the time I was using Windows at home and Linux at work (yeah, backwards from most I suspect).
I find it works well 99% of the time. Thereās a quirk I see sometimes with IMAP where if you delete a message then immediately expunge the folder, it will say itās busy, but usually do it anyway. Itās not annoying enough to bother filing a big report. Just click OK and get on with your day⦠It also only happens if youāre a weirdo like me who prefers to mark messages deleted instead of moving them to the trash folder.
If anyone is wanting to compare quirks vs mail server software, we use Dovecot 2.3 at home and work.