Listmonk is an open-source newsletter and mailing list manager — a self-hosted alternative to Mailchimp, ConvertKit, and similar services. It is written in Go, runs as a single binary backed by a PostgreSQL database, and handles subscriber management, campaign creation, list segmentation, and send scheduling. For publishers committed to owning their infrastructure, Listmonk is the most capable self-hosted option in the category. What Listmonk Provides Listmonk handles the management and orchestration layer of email newsletters: subscriber lists, subscriber data, campaign drafting, template management, tracking, and scheduling.