prevent leak via Date header field (local timestamp disclosure)
Emails send with TorBirdy installed are currently leaking local timestamp information via the Date header field.
Sukhbir is preparing a patch for Thunderbird that will allow us to send emails without Date header field. The Date header will then be inserted by the mail server as described in chapter 4.2.3: http://bit.ly/qDZm7C
To upload designs, you'll need to enable LFS and have admin enable hashed storage. More information