Send e-mail campaigns, newsletters, manage mailing lists, all from a powerful self-hosted dashboard released as a single binary. High performance and feature packed open source app written in Golang, and backed by Postgres. https://listmonk.app/
Exploring Listmonk alternatives? Try Mailtrain for a familiar, self-hosted Mailchimp-style stack, Mailcoach for automation and segmentation, and Mailercloud for polished templates and deliverability tools. Prefer simplicity? Minutemailer speeds up beautiful sends; budget-minded teams can eye BestRegards for a no-subscription model.