Copy Message ID

This is an extension that adds a button to the message header toolbar to copy the message ID to the clipboard. This is useful for sending email replies via the command line.

Installation

Get it from the Mozilla add-ons platform

Located here

Install it manually

1. Checkout this repo
2. Run make to generate the xpi file.
3. In Thunderbird, go to the Add-ons Manager.
4. Click Install Add-on From File... and select the xpi file from step 2.