In twitter user can be groupt into groups. Individual groups can then receive an a mass email directly in their DM. This is not spam. Its like a newsletter.

I would be more than happy to have something like that on DM on nostr. Give me something that saves my time and you will save time for millions who are joining nostr later. It does need to be perfect.

Please also note that sooner or later this issues have to be addressed. Right now we are a loving #nosterfamily who do not want to harm eachother. Others, not so nice plebs will join noster and will run spam attacks etc for sure.