If you have Python, it is very likely that you can use GmailFS — The Gmail Filesystem :) What this guy did is what Jeremy suggested, namely making all your wonderful eMail space into file storage.
GmailFS — The new filesystem
If you have Python, it is very likely that you can use GmailFS — The Gmail Filesystem :) What this guy did is what Jeremy suggested, namely making all your wonderful eMail space into file storage.