Constant Contact alternatives: 6 free & open-source picks
Curated, verified, and actually free. No trials, no crippled tiers. Star counts and last-activity dates checked by hand, not scraped and forgotten.
Listas, campañas y formularios integrables en un panel rápido; no incluye asistencia guiada.
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
Boletines autoalojados y formularios de suscripción con un editor visual real; la configuración SMTP reemplaza las llamadas de incorporación.
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
Campañas, contactos y formularios simples con un tope de 300 correos al día.
licenseproprietary, free
runstheir cloud
installHosted signup
dataContacts, campaigns, consent records, and message events live in Brevo's cloud; contacts can be exported as CSV.
the catch vs Constant ContactBrevo Free covers campaigns, contacts, and forms, but its 300-message daily ceiling and lighter beginner hand-holding make it less forgiving than Constant Contact.
setupAuthenticating a custom sending domain requires adding DNS records.
facts verified 2026-08-10
Una lista pequeña, campañas y un formulario sin costo; los límites de automatización y reportes son claramente visibles.
licenseproprietary, free
runstheir cloud
installHosted signup
dataLists, campaigns, automations, and reporting data live in EmailOctopus' cloud; contacts and reports can be exported as CSV.
the catch vs Constant ContactEmailOctopus Free is clean for a small list, but its limited forms, automation count, and short reporting window trail Constant Contact's broader small-business toolkit.
setupYou must verify a sender address or domain; DNS authentication is the first technical step.
facts verified 2026-08-10
Formularios, páginas de destino y envíos ilimitados para creadores; el editor es menos volante de evento y más boletín.
licenseproprietary, free
runstheir cloud
installHosted signup
dataSubscribers, tags, forms, broadcasts, sequences, purchases, and analytics live in Kit's cloud; subscriber and chart data export as CSV.
the catch vs Constant ContactKit Free offers excellent forms and newsletters for creators, but its creator-first editor and workflows are less suited to event promotions and general small-business campaigns than Constant Contact.
setupThere is no software install, but custom-domain sending requires DNS authentication and the free plan keeps one Kit-managed recommendation slot.
facts verified 2026-08-10
Boletines, gestión de contactos y formularios de suscripción para 2500 suscriptores; la marca es la marca de agua del plan gratuito.
licenseproprietary, free
runstheir cloud
installHosted signup
dataSubscribers, campaigns, automations, and engagement events live in Sender's cloud; subscriber data can be exported.
the catch vs Constant ContactSender Free covers newsletters, contacts, and forms, but vendor branding and free-plan account limits are the price of replacing Constant Contact.
setupA custom sending domain must be verified with DNS records for reliable delivery.
facts verified 2026-08-10
last updated 2026-08-10 · no votes, no pay-to-list · just what's real
| 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 |
| Brevo Free | proprietary, free | they host it | web | — | — |
| EmailOctopus Free | proprietary, free | they host it | web | — | — |
| Kit Free | proprietary, free | they host it | web | — | — |
| Sender Free | proprietary, free | they host it | web | — | — |
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 $100.8 a year.
Is there a free alternative to Constant Contact?
Yes: listmonk, Keila, Brevo Free and 3 more. Every tool on this page is either open source or genuinely free to use long-term: no trials, no crippled tiers.
Should I just build my own Constant Contact?
Our verdict is PARCIAL. The core loop is buildable, but a dependable replacement becomes a real weekend or multi-day project. For Constant Contact, send simple newsletters, manage contacts, and publish signup forms. The hard boundary is deliverability, templates, event and social tools, integrations, and support, plus deliverability, growth network, and integrations. If you'd rather build, the exact one-shot prompt is free at puedovibecodearlo.app/constant-contact.
