Rated 5 out of 5 stars

by Philoppe on Sept. 29, 2020 ·

Fine !!! Many thanks for the update. Now Mailbox Alert is worksing with Thunderbird 78. This addon is essential with more than one mail account. Why doesn't Thunderbird include it ?

This review is for a previous version of the add-on (0.25).  This user has other reviews of this add-on.