GNotifier

Yettwasezmel 1 ɣef 5 n yetran

sɛur DasJott di Feb. 20, 2018 · aseɣwen yezgan

Sadly and I think not on purpose it simply does nothing.
Not even the test button within the addon will do anything and Thunderbird brings up its own notifier.

I tried the system thing, then an own terminal command... nothing works. What a pity.

Using newest Thunderbird on Linux Arch.