Rated 4 out of 5 stars

OK I could not access your mail but I could debug with what you said here, thank you.

This review is for a previous version of the add-on (3.1.9). 

On the add-ons page there is a support e-mail and support website with a facility to send a message. What else do you need?

Rated 4 out of 5 stars

Hello,
Any idea why in Thunderbird 68.12.0 (on Windows), the HTML tab is displayed with yellow characters on yellow background ?
That being said I could edit it after transfering it in the notepad, but it could be more handy.

This review is for a previous version of the add-on (3.1.9). 

Looks like you have some sort of theme or modification to userChrome.css. Reviews are not for bug reports, please contact me directly using the support e-mail.