Rated 4 out of 5 stars

Terrific addon!
I am using version 4.5.5. It has still few bugs (can't resize original attachments when you forward messages), but works well with Thunderbird 68.7.0.
Could you please add support for PNG image format ?

Before that, I used the "Auto Resize Image" addon, which provides very interesting functionalities, but it is no more maintained.

This review is for a previous version of the add-on (4.5.5).