Rated 4 out of 5 stars

per Maëlan el mar. 31, 2021 · enllaç permanent

This add-on is great, very handy for seeing more of the message in the split view (it only has a small glitch, i.e. occasionally headers are half-collapsed and you have to click on [±] to get back to a consistent state).

Is there any chance that it gets updated for Thunderbird 78? (I guess it’s harder to implement now with WebExtensions?)