K-9 Mail - Pushing mail only when interacting with app needed With K-9 Mail, could you please advise if it is possible to have these mail fetching settings:

1) Polling every hour, both when interacting with the app and when running in the background.

but also:

2) Pushing all folders only when interacting with the app, but not when the app is just running in the background.

The reason for this is that I like push to update folders promptly when interacting with the app, but don't want to have unnecessary push connections open in the background.  However, I still like to poll in the background to be notified of new messages periodically.

I am using a Gmail IMAP account on a tablet running Android 5.0.1.

I have read through the documentation and been through the settings but would just like clarification on the above points.
No it's not.

It is not possible to configure the push service to only run while the app is open.