Thanks for the offer to help, Delta Chat (npub17gp…nrxn)! So after reading your docs for a bit… it wasn’t immediately clear but I think I understand now that you actually use email infrastructure to exchange messages (right?). So if I set this up for my group, first everyone needs to set up a new email address just for use with Delta, right? And the easiest is to use your chat mail server.
I use Fastmail regularly. Would I need a separate Fastmail account (inbox) or just a designated new alias?