Rated 5 out of 5 stars

yazan: Dillinger tarih: Oca. 20, 2020 ·

A legacy WebExtension version for Thunderbird 68.* is now available:
https://addons.thunderbird.net/en-US/thunderbird/addon/headertools-lite/

This review is for a previous version of the add-on (0.6.2).