> K9 and Thunderbird on Android suck.
Is there anything better though?
Is there anything better though?
And for mac OS, there is MailMate (also not free}, which has it's quirks but damn is it good. I gave up on ThunderBird more than ten years ago.
Email clients demand to have dedicated, paid developers.
Even just searching for a setting can take 5 minutes, and you often got to look for them because default settings make no sense at all.