gpg-mailgate

gpg-mailgate is a content filter for Postfix that automatically encrypts unencrypted incoming email using PGP for select recipients.

For installation instructions, please refer to the included INSTALL file.

Features

Correctly displays attachments and general email content; currently will only display first part of multipart messages
Public keys can be stored in a dedicated gpg-home-directory (see Note 1 in INSTALL)
Encrypts matching incoming and outgoing mode
Easy installation
gpg-mailgate-web extension is a web interface allowing any user to upload PGP keys so that emails sent to them from your mail server will be encrypted (see gpg-mailgate-web directory for details)