Hi ksuuk,
This is a very disrespectful claim and very disrespectful to all of the team members that work day and night to make Aqua Mail such a great app. "Aqua Mail is spying on you!", this is simply not true and it's a false claim!
My apology but we talked about this issue so many times. We are as transparent as possible. Aqua Mail is not spying on you. This is also not analytics. This is a Google issue, not Aqua Mail's. Ask them why every service that we developers have to use is so hard to contain to not connect to their services. Maybe you will claim why Aqua mail needs internet or Android to run. Here is one of the answers we received from them stating that it's expected behavior:
"In addition, we would like to know if the "firebaseinstallations.googleapis.com" request is made every time the app is started even when Crashlytics is disabled in the manifest file.
If it does end up being the latter, then that's an expected behavior that our engineers are aware of, and we’ll address it down the road. Our priorities, however, could change from time to time, and I’m unable to give you a definite timeline as to when this would be available."
If you'd like to help us out, please share with us any information that you may find out how we can go around this issue. Maybe you can find info on how somebody else fixed this with Crashlytics. We are nagging Google for over a few months now with this issue and they are just arrogant enough not to make any move on fixing it. Also if you have unchecked the boxes for analytics and you still see the requests please send us the log.