Here’s what I want Thunderbird to do. It’s very simple.

I want to be able to forward a message to myself as an attachment. When I receive that email, I want to be able to open the attached message and reply to it.

Is that so stinking hard? Why is the Reply button disabled??

I would use this simple concept so often to forward unaddressed but important messages to where I’m going to be that it mystifies me that the designers hadn’t thought of it. What extension do I need to download to enable this?