I relation to my other issue posted in General (do not know if that is a bug or a feature).
How to disable AquaMail when wifi is off.
So no synching, not by schedule, not by push, not manually! but also not sending and receiving an email.
Perhaps even not setting up an email to save it as a draft.
I also checked Tasker app, for this. Can't find it the setting.
The one thing i can do, is setup tasker, when starting the AquaMail app, to turn off the mobile data and turn on wifi. Which i have done for other apps like Google Play and YouTube.
It's only to get past the next month, where i have a limited data of 200MB a month. So using wifi at home and at work all the time. But outdoors not much.
After that month, i should have increased the limit to 500MB.