6 Best Open Source Klaviyo Alternatives
A curated collection of the 6 best open source and self-hosted alternatives to Klaviyo in 2026.
Looking for a free, privacy-friendly, or self-hosted replacement for Klaviyo in 2026? The top open-source alternative is Listmonk — Send email campaigns and transactional messages to millions of subscribers with a single high-performance binary backed by Postgres..
Other highly rated open-source Klaviyo alternatives include Mautic, Notifuse and Keila.
Send email campaigns and transactional messages to millions of subscribers with a single high-performance binary backed by Postgres.
Send email campaigns and transactional messages to millions of subscribers with a single high-performance binary backed by Postgres.
Mautic is a free and open source marketing automation platform that helps businesses manage leads, create campaigns, and analyze results.
Mautic is a free and open source marketing automation platform that helps businesses manage leads, create campaigns, and analyze results.
Free open-source email platform for newsletters and transactional emails. Self-hosted alternative to Mailchimp with visual MJML editor, A/B testing, and analytics.
Free open-source email platform for newsletters and transactional emails. Self-hosted alternative to Mailchimp with visual MJML editor, A/B testing, and analytics.
Self-hosted newsletter platform with powerful features, data protection, and full control over your mailing lists and campaigns.
Self-hosted newsletter platform with powerful features, data protection, and full control over your mailing lists and campaigns.
Open-source email marketing platform offering unlimited subscribers, campaigns, and workspaces. Self-hosted solution with powerful API and beautiful interface.
Open-source email marketing platform offering unlimited subscribers, campaigns, and workspaces. Self-hosted solution with powerful API and beautiful interface.
Build email templates as React components and automations in TypeScript. Deploy to your AWS account with SES integration. Marketing teams edit content without code.
Build email templates as React components and automations in TypeScript. Deploy to your AWS account with SES integration. Marketing teams edit content without code.
About Klaviyo
Advanced email marketing and SMS platform that uses customer data to create personalized campaigns, automate workflows, and drive revenue growth for ecommerce businesses.