As I said before I've recommended - promoted, advertised really, AquaMail many, many times and gotten many people to try it.. That in turn generates requests for help. I don't mind at all but I have spent considerable time doing tech support. Not here, in other forums.
Anyway, the point is not to pat myself on the back. Thing is, I get asked a lot if AquaMail will ever get encryption or, especially, ActiveSync, I have to tell them I don't know but that I'm not aware of any plans. That turns off a lot of people even if they don't need it now. They don't want to get invested in AquaMail if they may have to go to something else later. They're looking for an all-in-one solution.
I wish I could give a more definitive answer.
Nine users are in a similar situation, waiting to see if it will ever get IMAP and POP3 support.
Android since v1.0. Linux user since 2001.