Rated 5 out of 5 stars

per David Goadby el gen. 19, 2019 · enllaç permanent

If I had known that this add-on would not work with Thunderbird V60.4 then I would not have upgraded. I'm having to use Signature Switch which is rubbish compared to this. This is a great add-on; please upgrade it for V60. If no further interest then how about open sourcing it for us?