Z 3 z 5 hwěžkow pohódnoćeny

It seems to detect the duplicated message. But as a previous reviewer pointed out, I can't find the preference menu in either Thunderbird/Preference nor in Toos/Add-on Preference.

TB 68.3.0 in macOS 10.13.6

Tute pohódnoćenje je za předchadnu wersiju přidatka (1.5).