On Thu, 29 Sep 2016 15:58:10 -0300 "Ethy H. Brito" <ethy.brito at inexo.com.br> wrote: > Press and hold "Alt". You should see them appear (GTK 3.0). > They will go away when Alt is released. That would be if gtk-auto-mnemonics is set. Claws Mail is GTK 2 btw, not GTK 3. with regards Paul