On Wed, 1 Sep 2021 18:36:08 +1200, Rolf Turner wrote: > Can't help you (I'm not that knowledgeable) but I just thought that I'd > pitch in the remark that it works fine for me using Claws Mail > version 4.0.0 under Ubuntu 20.04. This "works fine" includes the > presence of a Preview button. Also for messages that use Fancy?