This post isn't really an issue with Enigmail but rather a general question. We would like to implement PGP encryption of e-mail in our office. Since most of us are Thunderbird users Enigmail seems to be the way to go. After a little bit of testing we're having no issues with it and are planning on having everyone use it. However, the question has been raised - what about existing messages? We use a IMAP server to store our email and all new messages will be stored encrypted, however all of our old mail is still unencrypted and easily visible. Is there a way to encrypt our existing messages against our own public key so that they will be stored encrypted yet we will be able to access them with enigmail/thunderbird along with everything else?