Aquamail will NOT "transmit or store" something!!
It only provides the ABILITY the user to do so!! (which can even in future ONLY be performed by the user himself)
So this can never be a violation of the terms of use.
Was that qualified legal counsel?
Are you a licensed practicing lawyer?
Would you represent me in communications with Google Play support, should the need arise?
I ckecked K9Mail's AndroidManifest file and app even doesn't declare this flag so it means that defualt value (True) is used.
Good for them.
Now, is it true that soooo many people don't have their old messages on the mail servers? So they can't just be re-synced?
Or are we having this discussion "in search of the greater truths", meaning "just for the hell of it"?
PS - I may be too cautious here, but, you know, "better safe than sorry".