Constant Contact alternatives: 3 open-source picks
Constant Contact costs $8.40/mo — $100.80 a year. These 3 alternatives replace it for $0, led by listmonk, Keila and Ghost. All 3 are open source. License, stars and last commit checked by hand on 2026-08-29. No trials, no crippled tiers.
Lists, campaigns and embeddable forms in a fast admin; hand-holding is not bundled.
licenseAGPL-3.0
runsyour server
installDocker Compose or a single release binary plus PostgreSQL
dataSubscribers, campaigns, templates, and analytics live in a PostgreSQL database on your server.
the catch vs Constant Contactlistmonk handles lists, campaigns, and embeddable forms, but it offers much less onboarding, design assistance, and small-business hand-holding than Constant Contact.
setupYou still need a PostgreSQL database and a trustworthy SMTP/API sender with authenticated DNS.
facts verified 2026-08-10
Self-hosted newsletters and signup forms with a real visual editor; SMTP setup replaces onboarding calls.
licenseAGPL-3.0+
runsyour machine or their cloud
installKeila Cloud signup or Docker image plus PostgreSQL
dataSelf-hosted subscribers, campaigns, and job state live in PostgreSQL; uploaded campaign assets live on persistent server storage.
the catch vs Constant ContactKeila replaces newsletters and signup forms, but SMTP authentication, deliverability, server maintenance, backups, and upgrades replace Constant Contact's guided hosted setup.
setupSelf-hosting requires Docker, PostgreSQL, a public HTTPS domain, and credentials for SMTP, SES, SendGrid, Mailgun, or Postmark.
facts verified 2026-08-10
Publishing platform with memberships and paid newsletters built in. The self-hosted answer to Substack taking 10% of your revenue.
licenseMIT
runsyour server
setupnot verified by us yet — check the repo README
facts verified 2026-08-29
What each one is, in full: listmonk · Keila · Ghost
last updated 2026-08-29 · no votes, no pay-to-list · just what's real
how to choose a Constant Contact alternative
Most proven
Ghost, with 49,000 GitHub stars — the largest community of the 3, which usually means more answers when something breaks.
what you give up by leaving Constant Contact
- deliverability, templates, event and social tools, integrations, and support
- inbox-placement expertise
- advanced automations
- commerce integrations
- recommendation and ad networks
None of the picks above covers all of it. The full verdict says which gaps matter.
Constant Contact alternatives at a glance
| tool | license | running it | platforms | stars | active |
|---|---|---|---|---|---|
| listmonk | AGPL-3.0 | docker to self-host | web, self-hosted | 22,600 | 2026-07 |
| Keila | AGPL-3.0+ | docker to self-host | web, self-hosted | 2,179 | 2026-08 |
| Ghost | MIT | docker to self-host | self-hosted, web | 49,000 | 2026-08 |
why people still pay for Constant Contact
People still pay for Constant Contact because newsletter operators pay for inbox placement, growth mechanics, and operational confidence on publication day. The recurring cost buys DNS authentication, reputation, bounces, complaints, unsubscribe compliance, templates, queues, analytics, backups, and support, not just the visible interface. If none of that applies to you, any pick above saves $100.80 a year.
questions about switching from Constant Contact
Is there an open-source alternative to Constant Contact?
Yes: listmonk, Keila, Ghost. Every tool on this page is open source: no trials, no crippled tiers.
Can open source really replace Constant Contact?
Our verdict is YES. Ghost (49k stars), listmonk (23k stars), Keila (2k stars) are mature open-source replacements for Constant Contact — self-host with docker and stop paying $8.4/mo. The full verdict, and what you give up by switching, is at caniopensourceit.online/constant-contact.
What is the most popular open-source Constant Contact alternative?
By GitHub stars, Ghost (49,000). listmonk is next with 22,600.
