Rated 3 out of 5 stars

It's not working in Thunderbird 78.0.1
Can you pleased update it ?
Can you add more/better looking ones ?
Thank you

This review is for a previous version of the add-on (1.68.4). 

An update is planned, follow progress here: https://github.com/mganss/EmojiAddIn/issues/34

I'll also update to the latest JoyPixels. Different icon sets are not planned, IMO JoyPixels are among the best looking emoji plus they've also been very fast updating to the latest Unicode standard.