A Programmer wrote:
I worked on a person's computer recently and he made the observation
that three months worth of his e-mails were missing (and NOT deleted
by this person - the emails = $$$ to him). Anyone have any
explanation on how this could happen?

Obviously my recommendation needs to be to ditch OE to this person (I
noticed it doesn't handle anything past about 300 messages well), but
what can I tell them to explain this happening?

Probably, OE was compacting and your friend rebooted in the middle or
had a power failure. Back up is a computer user's best friend. When you
say "doesn't handle anything past about 300 messages well" do you mean
sending more than 300 messages or storing more than 300 messages?

Your friend has probably lost all the messages for good, although he or
she could try this:

http://www.oehelp.com/dbxtract/default.aspx

Not free.

Alias