even though I have more data than I ever use on my plan, after 15yr's exclusivly on mobile data, I reflexivly look at the size of anything before I download something, 700mb is bonkers for email, and I have started to reject many other apps, based on there improbable sizes. useing android my phone has gmail iremovably installed on my phone, but was disabled before I even put a sim in it, but in spite of this, having just checked, it has user data, something in cache, and has used some internet data. how creepy is that.