nostr:npub1urzme6hpzan9k8cjp5rvukgx8ywyz8atjavyst2ljc628p0mm75seq39sc I’ve used (and designed for) Mailchimp extensively and would not recommend it. I’ve also worked with Campaign Monitor a fair amount and also had many issues with it.

I'm in the process of (finally) setting up up an email list for nostr:npub1xcrze9sq59ht57ncl03pxdgny7m2tqfyrrrclg887rjfqh8mhu2qnpwcc9 and am using nostr:npub13d7yl3wtrc5jueveqnv3cg3gc6ys4362hhuk9n4ek22c5yn9rx8s236dpp for its relative simplicity and refreshingly non-corporate, privacy-friendly, non-dystopian business model.