Rated 5 out of 5 stars

le Jinn ar MFómh. 20, 2013 · buan-nasc

Worth noting you should download the latest version ...06.2012... as the linked version on the add-on page is an old 06-2010 release. Confirmed the latest version works well in Thunderbird 17.0.8.

A very cool add-on! And with side-by-side view it's better than I was expecting.

I also use the Thunderbird Conversations add-on and this doesn't work with that, so emails with diffs need to be opened in the classic viewer. Can't hold this add-on responsible though, so a full 5 stars!

Dev's: Since this works well with the latest Thunderbird it'd be worth bumping the metadata so the add-on appears in searches within Thunderbird.