Rated 1 out of 5 stars

per Yønn el set. 20, 2018 · enllaç permanent

Since then, I switched to *MarkDownHere* extension which supports TeX syntax and is working great (I am also using Markdown more and more often instead of TeX).
Nevertheless I hope LaTeXit will be updated to be compatible with Thunderbird >=60. Very nice plugin, easy to setup and use when using thunderbird <60.