评分5星,满分5星

Does what it is supposed to. A perfect replacement for its predecessors which are no longer supported.

Tested and working with Ubuntu 18.04 Linux

评分5星,满分5星

Working properly on (TB 60.6.1 on MS Windows 8.1)

评分3星,满分5星

Doesn't seem to do anything (TB 60.6.1 on macOS 10.14.4)

EDIT: to be more precise, this add-on conflicts with the Display Mail User Agent extension for Thunderbird. When that is installed, Autocopy doesn't work.
See http://www.juergen-ernst.de/addons/dispmua.html

Updating my rating to 3.

Sorry, but I just repacked and upload here the old extension with a little mod stated from here http://forums.mozillazine.org/viewtopic.php?f=39&t=3041270&start=90
Beyond that I don't have the skill to fix that or anything else. This addon is going to stop on the next big version of TB unfortunately.