Rated 4 out of 5 stars

per MechaLynx el set. 25, 2013 · enllaç permanent

I have 1 complaint/suggestion. It has to maintain the size of the header pane between emails and perhaps allow enlarging it beyond the size allowed by default by Thunderbird (perhaps remember the scroll-state so that it always opens focused on the same part of the header). Overall on the right track.