Very useful addon, thank you! I write emails faster and easier, and their appears more beautiful. :-) Features I like: - very nice rendering; - support Github Markdown with syntax highlight in code blocks; - dot not destroy your signature nor e-mails below your text; - very easy way to switch between text and rendering.
Works on Thunderbird 45.2.0
This review is for a previous version of the add-on (2.12.0).