Sorry, after few months of try, I am considering to leave K9, reason is it does not deliver some basic features like to empty trash on exit. On the roadmap it said “Account setup using Thunderbird account auto-configuration” but I don’t see how this can be done, the 2 applications are completely different things. I was expecting to transfer my settings from TB and import into K9 and everything will work but that’s not happening. Further more, I believe partly due to Google’s ever changing system configuration and client requirement, one of my accounts hosted on Google suddenly failed to send, with error something socket timeout…etc. and get stuck on the outbox. If developers have time to spare, please check out how Aqua Mail works, I cease using it bcoz it asked for addition payment on paid version, the free version only support one a/c.