Why Gnus over Notmuch?
So the idea is more about Emacs as a holistic computing experience with other packages and services rather than about email specifically?
Early on you expressed misgivings about the western copyright regime, but you're using a GPL license. Is this a conflict?
Do you know of GNU Guix? How do you think about using it for packaging/configuring Emacs and your various packages?
Is this being split up in a heavily configured server for email hosting and a thin client package for your local client to integrate with your Emacs packages, maybe with a client thin docker container for other packages like notmuch locally?
So do you combine tagging facilities of Notmuch into Gnus as well?
Could you expand on the definition of libre-halaal?
What is the scope of what you are imagining? Just software?