I've been using claws-mail since well before it was claws-mail (back in the sylpheed days).
When I checked for new mail or opened dialogs they opened in the reduced size I specified, and this size was preserved when I exited the program. I upgraded to stretch a couple of months ago, and to buster just last night. Since the stretch upgrade claws-mail dialogs opened in maximum size.v If I catch "Get mail" before it's finished, I can reduce the dialog to a business-card-sized window, and that works for the current session, but if I exit the program the dialogs return to full size whenever I re-start. How can I specify and save a reduced size for the get-mail dialog?