Review for Messenger - Quick Access by JamieMarchant
Rated 1 out of 5 stars
Did not work with 2FA for me, it opened Firefox instead.
As stated in the description, this simple add-on only redirects you to Messenger; it cannot force inner page links to open as new Thunderbird browser tabs.
If you're familiar with JS, you're welcome to contribute to on GitHub anytime.
To create your own collections, you must have a Mozilla Add-ons account.