Keeper (surprised
). Disk space is cheap. Full text searching on a few thousand emails is quick and, even though I probably never will, I can reread some emails. I do delete social event emails but then I've probably copied the event into my calendar (if I could make it) so really I'm just replacing one long term storage with another. GMail offers over 2.5GB of space; it takes a lot of email (or big attachments) to fill that up.