Re: Android 11: App polling interval is not 15 minutes minimum?

VanguardLH wrote:

When I check IMAP PUSH, it only works in clients on the Inbox folder.
If the server moved a new message into the Junk folder, PUSH isn't used
on that folder for the client to see a new message show up there.  I can
get 2FA codes via e-mail that end up in the Junk folder, and those codes
expire

When I ran my own Dovecot server, IMAP worked properly, K9 was set to never poll, and set for push notify on 1st class folders, inbox was a 1st class folder for dislay and push purposes, I got 'instant' notifications, life was good.
Two things have changed since then, I use MS365 instead of Dovecot, and Android has got more involved in battery saving.  I allow K9 to be active all the time (it shows as such on the notification shade with the warning it may eat battery).
Notifications often seem to not be "instant" now, can't put my finger on when it changed, I can frequently open my phone to see that it has received new email within the past couple of minutes, yet I didn't get a notification.
Other times picking up the phone seems to trigger it to check email (even though polling is off) and there are new messages it hasn't noticed until then.
I *want* it to notify me ASAP, I don't care if it eats more battery.