Mailchimp alternatives: 7 free & open-source picks
Compare recorded free and open-source options, their capabilities and operating requirements. Source dates are shown below; licenses, hosted limits and project activity can change.
The heavyweight open-source replacement for segmentation and automation; it also replaces ease with operations.
licenseGPL-3.0+
runsyour server
installDownload the production package or install with Composer, then configure PHP, a database, cron, and a mail transport
dataContacts, segments, campaigns, events, and reports live in the configured MySQL or MariaDB database; assets, configuration, logs, and queue files live on the server filesystem.
the catch vs MailchimpMautic offers more control but gives up Mailchimp's managed deliverability, upgrades, templates, integrations, and low-maintenance operation.
setupThe first wall is not the installer but production operation: PHP and database tuning, several cron jobs, HTTPS, backups, upgrades, SMTP/API sending, and DNS authentication.
facts verified 2026-08-10
Campaigns, transactional mail and workflows together; audience CRM depth is thinner.
licenseAGPL-3.0
runsyour machine or their cloud
installHosted signup, or the official Docker Compose stack
dataThe self-hosted stack stores core data in PostgreSQL, jobs and cache in Redis, and objects in MinIO; hosted data is kept in Plunk's EU infrastructure.
the catch vs MailchimpPlunk's audience CRM, template ecosystem, campaign analytics, and non-technical marketing workflow are noticeably thinner than Mailchimp's.
setupHosted use still needs domain authentication; self-hosting adds PostgreSQL, Redis, MinIO, Nginx or another proxy, exposed web and SMTP services, DNS, and ongoing deliverability work.
facts verified 2026-08-10
A modern visual campaign and automation stack; you own the database and the deliverability chores.
licenseAGPL-3.0
runsyour machine or their cloud
installHosted signup, or one application container plus PostgreSQL for self-hosting
dataSelf-hosted contacts, campaigns, automations, and events live in PostgreSQL; files can use S3-compatible storage, and the configured email provider receives message payloads. Hosted data lives in Notifuse's cloud.
the catch vs MailchimpNotifuse has a smaller template and integration ecosystem, and self-hosters assume database, upgrade, deliverability, and sending-provider work that Mailchimp handles.
setupSelf-hosting still needs Docker, PostgreSQL, a public HTTPS endpoint, an SMTP or API sending provider, and correctly authenticated sending domains.
facts verified 2026-08-10
Campaigns, forms and automation with many contacts but only 300 daily sends.
licenseproprietary, free
runstheir cloud
installHosted signup, sender verification, and optional domain authentication
dataContacts, campaigns, templates, automation events, and reports live in Brevo's cloud; exports are available, but the internal storage format is not disclosed.
the catch vs MailchimpBrevo's free 300-email daily ceiling makes a single larger campaign slower than Mailchimp and its free emails carry Brevo branding.
setupThe first meaningful hurdle is verifying the sender and setting SPF/DKIM records for a sending domain; without that, deliverability will disappoint.
facts verified 2026-08-10
A real small-list plan with forms and simple automations; reports expire after thirty days.
licenseproprietary, free
runstheir cloud
installHosted signup, list import, and sender/domain verification
dataSubscribers, campaigns, forms, automation state, and reports live in EmailOctopus's cloud; CSV import/export is supported, while the internal storage format is not disclosed.
the catch vs MailchimpFree-plan reports expire after 30 days and the account is limited to one landing page or form, leaving less history and experimentation than Mailchimp.
setupA sender address must be verified, and serious sending should use an authenticated domain.
facts verified 2026-08-10
Campaigns, forms, analytics and basic automation inside WordPress; the free list stops at 500.
licenseGPL-2.0+
runsyour machine or their cloud
installInstall the WordPress plugin, create a MailPoet account, and enter the free Starter-plan key
dataLists, subscribers, newsletters, forms, and settings live in MailPoet tables inside the site's WordPress database; MailPoet's sending service processes recipient addresses and keeps delivery logs, which its documentation says are erased after three months.
the catch vs MailchimpIt works only inside WordPress and the free Starter allowance stops at 500 subscribers and 5,000 emails per month.
setupIt requires an existing, maintained WordPress site plus a plan key and sender/domain approval; it is not a standalone email app.
facts verified 2026-08-10
Campaigns, forms, analytics and unlimited workflows in a useful free tier; the monkey can retire.
licenseproprietary, free
runstheir cloud
installHosted signup, list import, and sender/domain verification
dataSubscribers, campaigns, forms, automation state, transactional messages, and analytics live in Sender's cloud; the internal storage format is not disclosed.
the catch vs MailchimpSender's one-seat branded free plan has a smaller integration and template ecosystem than Mailchimp, even though its send allowance is generous.
setupThe first real hurdle is authenticating the sending domain and warming a legitimate list rather than merely creating the account.
facts verified 2026-08-10
latest recorded source check 2026-08-10 · check current terms at the source
listmonkCampaigns and forms are excellent, but the missing automation builder is not a footnote here.
Mailchimp FreeThe free plan now stops at 250 contacts and omits automation flows; the mascot is mostly a signup form.
SendPortalA familiar open-source recommendation with no commit since April 2024.
| tool | license | running it | platforms | stars | active |
|---|---|---|---|---|---|
| Mautic | GPL-3.0+ | self-host, real ops | web, self-hosted | 10,300 | 2026-08 |
| Plunk | AGPL-3.0 | docker to self-host | web, self-hosted | 5,300 | 2026-08 |
| Notifuse | AGPL-3.0 | docker to self-host | web, self-hosted | 2,038 | 2026-08 |
| Brevo Free | proprietary, free | they host it | web | — | — |
| EmailOctopus Free | proprietary, free | they host it | web | — | — |
| MailPoet Starter | GPL-2.0+ | self-host, real ops | web, self-hosted | — | — |
| Sender Free | proprietary, free | they host it | web | — | — |
They pay because email is business-critical and deliverability problems are expensive.
Questions about these alternatives
Is there a free alternative to Mailchimp?
Yes: Mautic, Plunk, Notifuse and 4 more. These are recorded free or open-source options. Compare their feature limits, licenses, hosting costs and current availability before choosing.
Should I just build my own Mailchimp?
Our verdict is KINDA. A campaign sender is buildable, but Mailchimp's value is deliverability, templates, compliance, automations, segmentation, ecommerce integrations, and support. Review the scope, implementation prompt and trade-offs in the Mailchimp build guide.
