*I* never delete my emails. I have a trail back to
1994. So?
Also, [[Citation needed]] for paranoid ravings.
http://www.brighthub.com/internet/google/articles/80100.aspx
Just random googling, that says they delete deleted messages generally
within 60 days but do leave a hole for offline backup systems having
copies (which makes sense from CYA perspective.)
Probably better to build profile data off of each email and store that
anyways, less computation.
Self hosted mail systems for the win.
- Ethan