Gmail consuming GB of data My Gmail app has a huge problem: only in this month it has consumed around 1 GB of mobile data, and 22GB of wifi data.
Today even though I haven't used mail at all, I have consumed 400MB of wifi data just by keeping the app installed.

I have already tried to:


upgrade my Android to the last version
remove all update of Gmail, and reinstall it from scratch.
stop background data (which is a workaround and not a solution)


What else can I do?
This seems the same problem these guys had solved in this 2 different 3Ds.

http://forums.androidcentral.com/google-nexus-4/310931-gmail-data-usage.html

https://productforums.google.com/forum/#!topic/gmail/gF3b9Wi-XfU

The advice given there was to reduce the number of days of messages to sync (via Gmail app settings), and avoid building up a large number of messages in Gmail inbox (archive them instead). 
Although this solutions sounds good, they never worked. 
Instead, I have solved the problem using k-9 mail.