The Thunderbird add-on enables message selection based on pre-existing sorting criteria such as subject, author, or recipient.
To activate the sort mode, all you need to do is disable all the shortcuts with just one key (such as pressing "j" for "Junk") and press CTRL-9 (please note that it was CTRL-0 in version 0.1). When you're ready to exit, simply press ESC.
One of the most useful features of Jumpbykey is its ability to enable the "jump-mode" on startup. To do so, all you have to do is set the pref "jumpbykey.enable_on_startup" to true, and you'll be ready to go every time you open Thunderbird.
Overall, Jumpbykey is an essential addition to any Thunderbird setup, making email sorting and filtering easier and more efficient than ever before.
Version 0.2.1: N/A