Actually the email program doesn't delete the email or emails to the Recycle Bin, but rather empties its own internal trash or Recycle Bin.
We are talking aboiut a web client connection to the mail server here and it does delete the email from the server in the circumstances I've mentioned above.
Originally Posted by Blaire28
Please make sure that you have opened and read it on your computer, the reason is that the message is cached to your computer and can be recovered as a HTML page. According to your situation, since the emails had been deleted a long time ago, you may need the data recovery software to recover your deleted emails.
If the only acces to the mail is via the Zimbra Web UI then the mail is never cached on the local PC, that would only happen if a fat mail client was being used.