Self-hosted newsletter and mailing list manager. Performance and features packed into a single binary. Free and open source.
My new Newsletter is published with Listmonk on
list.ssp.sh. So far I used Mailchimp. I also liked Buttondown, unfortunately, it costs 9$ for above 100 subscribers.
By using open source Listmonk, I have the sending emails and collecting and unsubscribing from a newsletter, which I needed. But I had to deploy it myself. I used Railway.app.
listmonk - Free and open source self-hosted newsletter, mailing list manager, and transactional mails