One whos active daily e-mail accout is filled with spam that never gets read or deleted, causing a high number or unread messages to be displayed at all times.
Omg Bill! 1,343 new e-mails!? You're such an e-mail packrat!
One who has a difficult time placing emails in the deleted file and an even harder time emptying the deleted file because of the finality of the action. They are afraid they may someday need one of those emails (although they never will)
At the time of this posting, I have exatly 6000 emails contained in my inbox. I am an email packrat!