Rated 5 out of 5 stars

for thunderbird > 103.* please do following:

1.) download the current latest version (2.3.0) here from ATN and open the .xpi with e.g. winzip or similar packing tool

2.) open with any editior the manifest.json file in root folder and replace the "strict_max_version" value from 103.0 and set them to e.g. 120.0 and save this changes and update the xpi too! Then close the xpi and install it manually - then this addon is active again but if all features work, I didn't now at this time. Think we must wait, if the authors update this addon.