There is a little trick to the way POP3 email programs like Outlook, Outlook Express, Eudora and Thunderbird store the email messages you receive. A “deleted message” is not really deleted! Did you know that?
Outlook and Outlook Express store all the emails in one huge file, even if you have your emails split between multiple folders. Eudora creates a separate file for each email folder, such as Inbox, Outbox, Trash, Junk and any folders the user creates. Thunderbird similarly uses multiple files for emails.
Personally, I like Eudora‘s & Thunderbird’s approach — if I should ever have a file corruption issue with one of the email folders, I’m not in danger of losing all of my emails, just those in that one folder.
Read more in When I delete an email, it’s gone — right?
