Best Open Source Email Marketing & Newsletters Tools in 2026
Tools for building, sending, and analyzing email campaigns, newsletters, and automated email sequences.
The most popular pick this year is Listmonk with 20,015 GitHub stars, but all 5 options below are worth considering depending on your needs.
5 open source email marketing & newsletters tools — ranked by GitHub stars. Browse all
Listmonk
High performance, self-hosted, newsletter and mailing list manager with a modern dashboard. Single binary app.
Mailchimp
Mautic
Open-source marketing automation platform with email campaigns, lead management, and multi-channel marketing.
HubSpot
Plunk
Open-source email platform for sending transactional and marketing emails, self-hostable with a clean API.
MailchimpKeila
Open Source Newsletter Tool and Mailchimp alternative for creating campaigns and sign-up forms.
Mailchimp
Templatical
Open-source drag-and-drop email editor with JSON templates, MJML rendering, and framework-agnostic embedding.
BeeFreeHow we rank these tools
Tools are ranked by GitHub stars as a proxy for community adoption and trust. Stars reflect how many developers found a project valuable enough to bookmark — a reasonable signal for quality in the open source world. We only list tools that are actively maintained and open source.
Looking for tools you can run yourself? Browse self-hosted email marketing & newsletters tools →