Rated 5 out of 5 stars

by smex on Feb. 3, 2026 · permalink

Manuel, you should unzip it as the original folder-tree, and repack again the tree, not the folder, it should have exactly the same structure, please check this issue carefully, open it with winrar and see if it has exactly the same structure, than change only the number, like from 144 to 149 or more, like 155 in the json. Work only with notepad or other plain text editors, not word or complex editors. Then you have to first uninstall the old plugin, close thunderbird and reinstall it. it should work, i work with it now, it works with the newest versions like 147.0.1.