We currently wanting to migrate from our legacy pop3 mail solution but management wants to know what to do if/when a user deletes a email.
I know the backup and archiving part of zimbra are available in the "pro" versions but what do you do if a user needs a deleted email?

For instance since we use pop3 for mail this is the way we retrieve deleted emails.

My users constantly delete "important" emails and we have to retrieve them. Since we use pop3 we open the catch all email account, "archive", in a mail client and search for the message. We then forward it to the user.

How would we retrieve deleted emails w/ zimbra?

As you can see this is very cumbersome. Not to mention our backups consists of splitting the PST file then burning it to disk. The PST file is well over 5 gigs.