Rated 4 out of 5 stars

by Jayking on Aug. 30, 2018 ·

I found that if I uninstalled the add-on then re-installed it worked, well, partly... :) I couldn't select the arrows to manipulate the font size. So, I entered the number manually then hit apply and it worked for me via Thunderbird version 60 32bit.

This review is for a previous version of the add-on (64.4).