I use Aqua mail on my Gemini because it can make use most of the screen without the annoying sacrifices of K9 (like making new folders).
Aqua mail can display 10 emails in a main list while simultaneously viewing the folder tree. You can use completely offline. Any folder can be assigned for selective sync. Timed email sending. Rich text formatting. Preloading of attachments. Customizable interfacte and buttons. Multiple accunts. Reading confirmation. Etc.
Very handy: gives haptic feedback when sending mail is complete (I assigned a double vibration and now I never have unsent mail because of any reason).
Now it is on 50% sale in google play.
Thanks for the heads up, but it doesn't seem like it has the 3-pane view that Profimail has??
https://play.google.com/store/apps/details?...nelycatgames.PM(you can see it in the second screenshot)
Does Aqua Mail have that view, although it isn't in the screenshots? Then it would be more interesting for me. (Can't find a way to get K9-mail to present that view either...) But a lot of the features you list seems really nice!
It (Profimail) has a lot of other problems, but I am kind of dependent on that feature... And it has a widget that can show only the "Recent" mails, which is kind of important/nice to.
Some of the problems with Profimail for me is: It often loose/change connection, and then for some reason insists on re-downloading all mails again, at least for the accounts that I use IMAP-idle on. Sometimes it only downloads one, or a few of my accounts, but it means I regularly need to delete and recreate, form a backup setting, all the accounts again, because a folder which actually has 2000 mails is reported to have around 20000... (I have it set to not delete messages deleted on the server).
It is also difficult to get it to upload sent e-mails (it usually goes through eventually, but you usually need to "trigger" it manually), and close to impossible to get it to upload drafts...
It also has fewer keyboard-shortcuts than it used to on Symbian, and has some trouble with attachments, both sending and receiving, sometimes. But like I said, I've been using it since "forever" on Symbian, so have gotten used, and kind of dependent, to it.
(Didn't want to "high-jack" your topic whit a "recommendation" of Profimail instead, but felt I needed to explain what I need/want from a mail-program, which Profimail has. But then I at least needed to point out at least a few of the problems I'm facing with it as well, to not just "praise" Profimail. Hope that was OK.)