No I mean, I have many different domains. So if I want to send an email from example.com, I have to add it to the sending profiles. This is fine, and usually do

No I mean, I have many different domains. So if I want to send an email from example.com, I have to add it to the sending profiles. This is fine, and usually done during initial setup. However, if I want to be able to send from a second domain, say, thisdomaindoesntexistasdadasd.com I need to go and add that seperatly for allow thunderbird to allow me to put it in the from addr. Further, when sending an email, I then have to select the domain from the drop-down, then edit. it's just tedious. Not impossible to work around, but also not worth the effort when the Fastmail UI handles it so much better.