Thanks, this looks great! I'm also learning DM right now. Serving 1059s only to intended recipients and permitting recipients to delete 1059s seems like the right way to do it. I'll put it on my list of things to try out.

I created it because no others relays care about DM privacy. I updated NIP 59 yesterday to fix a privacy issue. And implemented the updated spec today inside the relay. https://openspecs.uid.ovh/spec/npub1kg4sdvz3l4fr99n2jdz2vdxe2mpacva87hkdetv76ywacsfq5leqquw5te/nip-59