Avaliado com 5 de 5 estrelas

This was a fantastic add-on. Sad to see it go, but having just looked into the steps required to upgrade this add-on to Thunderbird 78 it would appear Mozilla have removed the functionality that would allow *any* add -on to color the background of the message list window.

If this is the case, surely Mozilla must realise that many people used such a feature and if they have restricted access via official API, they either need to release an API or add the function for colouring accounts into the main UI.?