Der schwarze Schimmel in meiner Dusche ist da anderer Meinung!

Do you mean the CharaChorder? I thought about getting one in the past bit it looks like a super steep learn curve and I’m not sure if I’m willing to subject myself to it.

There’s Betterbird, though I don’t know exactly what makes it better, except for still allowing to manually load external content in encrypted mails, which Thunderbird just removed for whatever stupid reason.