Benvenuto in Thunderbird Add-ons.
Aggiungi nuove funzionalità e stili per rendere Thunderbird veramente tuo.
ChiudiRecensione di Sicilian Volovski per Custom Buttons
Assegnate 5 su 5 stelle
It's a great plugin, but seems to not be maintained, so I had to dig for the patch myself.
You can get the patch here - https://github.com/SicVolo/firefox-custom-buttons/releases/tag/0.0.5.8.9.1
Please, note that it is not signed. I am not a firefox dev, just a code hacker who need to use the extension NOW. To make it work you'll need xpinstall.signatures.required set to false in about:config.
I've listed the changes to the code. If you don't trust the binary, get the code from https://github.com/SicVolo/firefox-firefox-custom-buttons
and compare to your current add-on yourself.
Hopefully the official patch comes soon.
Per creare una tua raccolta devi avere un account per Mozilla Add-ons.