Rated 5 out of 5 stars

Thunderbirdでは、返信や転送時のヘッダーが英語のなったり、思ったように表示されなかったが、このアドオンで解消された。
有料なこと以外は満足している。

This review is for a previous version of the add-on (4.0.2). 

thanks for the review! since SmartTemplates is a very complex piece of software in order to support the many functions and integration into Thunderbird rapidly changing UI there is a lot of ongoing work to stay compatible and add new features.

just to get compatible with the new 3pane structure of Tb 115, and integrate into the new HTML front end I worked several weeks. this is what the standard license (50cents / month) will pay for, if more people choose to buy one. I am also advocating every week with Thunderbird not to scrap the support for experimental Add-ons like mine that have full access to the backend code and the complete user interface (which API based mail extensions are not allowed)