3 Free & Open-Source Mailchimp Alternatives
Mailchimp's free tier is generous at first, but pricing scales with subscriber count and quickly pushes growing lists into paid plans. The alternatives below are self-hosted, which means no per-subscriber fees and full ownership of your sending reputation and data — at the cost of running the server yourself.
The best Mailchimp alternatives
Listmonk
Our top pickOpen sourceSelf-hostedA single lightweight binary for newsletters and bulk email.
Listmonk is a self-hosted newsletter and mailing-list manager built for high-throughput sending without a heavy footprint. It ships as one compact binary backed by Postgres, so it's genuinely simple to deploy on a small server rather than needing a cluster.
- Subscriber lists with single/double opt-in and query-based segmentation
- Multi-SMTP sending queues with rate limiting
- A drag-and-drop and raw-HTML template editor
- Built-in campaign analytics (opens, clicks, bounces)
Mautic
Open sourceSelf-hostedFull marketing automation, not just email sends.
Mautic goes beyond newsletters into lead scoring, landing pages, and multi-step campaigns — it's closer to a free HubSpot than a free Mailchimp. That makes it more setup work, but a better fit if email is one piece of a bigger nurture strategy.
- Visual campaign builder with branching logic
- Lead scoring and behavioural triggers
- Built-in landing pages and forms
- A large plugin/integration ecosystem
Postal
Open sourceSelf-hostedA self-hosted SMTP and mail-delivery platform.
Postal sits a layer lower than Mailchimp — it's mail delivery infrastructure (think a self-hosted SendGrid) rather than a campaign-builder UI. It suits technical teams who want to run their own transactional and bulk sending without renting an API.
- Full SMTP server plus a delivery API
- Per-domain reputation and bounce tracking
- Web UI for managing mail servers and routes
- Runs well on modest, self-managed hardware
Licensing and pricing models change over time — confirm current terms on each project's own site before making a procurement or compliance decision.
Frequently asked questions
What is the best free alternative to Mailchimp?
For straightforward newsletter and bulk-email sending, Listmonk is the closest match to what Mailchimp does — lightweight and fast to set up. If you need lead scoring and multi-step campaigns as well, Mautic is the more complete (and heavier) option.
Is a self-hosted email tool actually cheaper than Mailchimp?
Usually, once your list grows past a few thousand subscribers — you trade Mailchimp's per-subscriber fee for a small server bill and the time to maintain deliverability yourself (SPF/DKIM setup, IP warm-up, bounce handling). For small lists, Mailchimp's free tier can still be simpler.
Do these tools handle deliverability as well as Mailchimp?
Not out of the box. Mailchimp has established sending IPs and reputation built in; with a self-hosted tool you're responsible for your own domain authentication and sender reputation. It's manageable, but it's real work most teams underestimate at first.
More free alternatives
Not sure which way to go?
A free Growth Audit can help you weigh self-hosting against the tool you already pay for.