Rated 5 out of 5 stars

EDIT: Once I found the preferences dialogue box for the add-on, everything is smashing. This was my ignorance with Thunderbird add-ons. Add-on works great.


ORIGINAL: Doesn't seem to do anything. No options to change the date format anywhere in Preferences after installing. The referenced addon that this is based off of had it under Preferences > Display. Nothing new shows up here after install.
On version 60.8. I guess it's not compatible? :(

To change the date format, you have to adjust the addon's preferences. (For me, that's in Tools > Add-on Preferences > Enhanced Date Formatter.)