I use FairEmail.
https://email.faircode.eu/
I used to use k9, but it started having issues on newer OS versions, it would stop syncing on a schedule.
I think it has great plain text support.
EDIT:Actually, allow me to un-recommend Aqua Mail, if you're looking for an email app to manage multiple accounts. When I bought it, quite a while back, the free version allowed you to access 3 accounts and the 'Pro' version was a one-time payment of about £5. It seems it's now limited to one account in the free version and the Pro version is a $25 annual subscription.
Another great app ruined by a developer getting too greedy!
5 comments
[ 2.8 ms ] story [ 25.6 ms ] threadhttps://f-droid.org/en/packages/com.fsck.k9/
> Does it have good support for plain text email.
Yes.
https://forum.k9mail.app/t/k-9-mail-is-not-sending-format-fl...
https://play.google.com/store/apps/details?id=org.kman.AquaM...
EDIT:Actually, allow me to un-recommend Aqua Mail, if you're looking for an email app to manage multiple accounts. When I bought it, quite a while back, the free version allowed you to access 3 accounts and the 'Pro' version was a one-time payment of about £5. It seems it's now limited to one account in the free version and the Pro version is a $25 annual subscription.
Another great app ruined by a developer getting too greedy!