email-lists

Listmonk is a high-performance, self-hosted newsletter and mailing list manager with a modern dashboard interface. It's distributed as a single binary and uses PostgreSQL for data storage.

Mautic is an open source marketing automation platform that helps businesses automate their marketing campaigns, track leads, send emails, and manage customer relationships through a modern web interface.

Keila is an open source newsletter tool and Mailchimp alternative that allows you to easily send campaigns and create sign-up forms, with support for multiple email delivery providers.

Fully functional open source email marketing manager for creating, sending, integrating, and analyzing email campaigns and newsletters. Used in 95+ countries and available in 20 languages.

Sympa is an open source electronic mailing list manager that automates list management functions like subscriptions, moderation, and archives. Optimized for large lists with efficient message delivery.