Window 7 x64 Thunderbird 60.5.0 (32 bit) Up to date. Please see attached screenshot. I want to decrease the size/font of the area in RED, that says:- From: < email > Subject < > Reply To: <email> To: <email> I tried <Ctrl +/-> which increases and decreases the font of the email text. That is not what I am talking about. When I right-click in the RED area and select <Customize> I can only change the Icons highlighted in BLUE. Thank you for any tips.