In settings, I know it's possible to change the e-mails font size, however the UI font size doesn't change. This add-on increases the UI font size a little bit, but I don't think we should rely on add-ons to change something so basic.
I had this idea after reading this one:https://connect.mozilla.org/t5/ideas/shortcut-for-different-profiles/idc-p/6317In case you do not know what I am talking about, please check out this article explaining about guest mode (there's also pictures sh...
Is there a hidden option to do this natively? I'm on Windows 10 and using the same settings the OP is using to achieve this behavior. It's not perfect tho, as Thunderbird will only appear on the systray if it is minimized from the taskbar.
