[kqr2]

After you reach 15GB will you stop receiving new email or will your old mail just get deleted FIFO?

[hypeatei]

You will stop receiving email, IIRC.

[pc86]

This is correct, I pay something like $2/mo for I think 100GB of Google storage, and when my card expired I got frantic notifications from Google that I would not be receiving any email until I updated the card information.