Rated 4 out of 5 stars
What it does, it does very well!!
However, there are 2 standard Tbird features which this add-on should support, and presently doesn't.
1) Be able to set the Priority of the redirected mail.
2) Be able to request a return receipt.
These are standard features when sending email.
Other than missing those 2 features, this is a great add-on!!