Rated 4 out of 5 stars
Bzzz this Add-On was what made Thunderbird usable for me. Thank you, it's great.
But following Thunderbird's auto update 60.2.1. on 2 October 2018, TF&SC has been disabled on my WIN10PC.
I know TF&SC 64.4 works for other folks but I get error messages saying it (and actually other Add-Ons) are not compatible with TB 60.2.1. I've asked TB Support to help me.
Maybe I need a clean install of TB or I need to recreate my TB profile.
Okay, I just updated my test machine to 60.2.1 as well, and it still works. Does Windows 10 install some 64bit version of Thunderbird? I only have Win7 and it updates to the 32bit version.