Mautic vs Mailchimp vs CampaignOS: Full Comparison 2026
Mautic, Mailchimp, and CampaignOS represent three distinct approaches to marketing automation: Mautic is open-source enterprise software with a long track record; Mailchimp is the most widely-used managed SaaS email platform; and CampaignOS is a modern open-source platform with a focus on multi-channel automation and usability.
This comparison covers the differences that actually matter when choosing between them — not every feature checkbox, but the decisions that determine whether a platform fits your workflow, budget, and scale.
Full Comparison Table
| Feature | Mautic | Mailchimp | CampaignOS |
|---|---|---|---|
| License | Open-source (GPL) | Proprietary SaaS | Open-source |
| Hosting | Self-hosted | Managed SaaS | Self-hosted / cloud |
| Contact limit | Unlimited | 500 (free), paid per contact | Unlimited |
| Monthly cost | $0 + server (~$10-20) | $13–$350+ (scales with contacts) | $0 + server (~$10-20) |
| Workflow automation | Advanced campaigns | Customer Journey builder | Visual drag-and-drop builder |
| Yes | Yes (strong) | Yes | |
| SMS | Yes (via plugins) | Yes (add-on) | Yes (native) |
| Push notifications | Via plugins | No | Yes (native) |
| Lead scoring | Yes (advanced) | No | Yes |
| CRM features | Contact management | Basic contact management | Contact management + pipeline |
| Data ownership | 100% | Mailchimp holds your data | 100% |
| Setup complexity | High | Very Low | Medium |
| UI quality | Dated, complex | Polished | Modern |
| Community/support | Large OSS community | Excellent paid support | Active development team |
Pricing Comparison
Pricing is where the three platforms diverge most dramatically for growing businesses:
| Contact Scale | Mautic | Mailchimp | CampaignOS |
|---|---|---|---|
| 1,000 contacts | ~$15/mo (server) | ~$20/mo | ~$15/mo (server) |
| 10,000 contacts | ~$15/mo (server) | ~$135/mo | ~$15/mo (server) |
| 50,000 contacts | ~$20/mo (bigger server) | ~$350/mo | ~$20/mo (bigger server) |
| 100,000 contacts | ~$30-40/mo (dedicated server) | ~$800+/mo | ~$30-40/mo (dedicated server) |
The pricing story is clear: self-hosted platforms (Mautic and CampaignOS) have near-flat costs as contact volume grows. Mailchimp scales linearly — and at 100,000 contacts, the difference is $760/month saved by using a self-hosted alternative.
Automation Features
Mautic has the deepest automation feature set: complex campaign workflows with point-based scoring, dynamic content, multi-touch attribution, and advanced segmentation. Its power comes at the cost of a learning curve that many teams find steep.
Mailchimp’s Customer Journey builder handles standard use cases well — welcome sequences, abandoned cart, behavioral triggers — with a visual interface that most non-technical marketers can operate without training. Complex branching logic is its limitation.
CampaignOS strikes the best balance: a modern visual workflow builder with branching logic, multi-channel execution (email + SMS + push), and automation depth comparable to Mautic in a significantly more approachable interface.
Setup and Maintenance
This is Mailchimp’s genuine advantage: zero setup. Sign up, verify your domain, and you’re sending in 30 minutes. No server, no installation, no configuration.
Mautic and CampaignOS require server setup. CampaignOS offers Docker installation that reduces the technical barrier significantly. Mautic’s traditional PHP setup is more involved. After initial setup, maintenance for both self-hosted platforms is minimal — updates take 15-30 minutes a month.
Who Is Each Platform Best For?
| Choose This | If You Are… |
|---|---|
| CampaignOS | Any business with technical capability that wants unlimited contacts, modern UI, multi-channel automation, and full data ownership |
| Mautic | Technical teams needing maximum feature depth, enterprise deployments, or agencies managing many client accounts on one installation |
| Mailchimp | Beginners, solopreneurs with small lists, and businesses that cannot self-host and don’t need automation beyond standard email sequences |
Can You Migrate Between Them?
Yes — all three support contact list export in CSV format. Email template migration requires rebuilding (templates aren’t transferable between platforms). Automation workflow logic needs to be recreated in the new platform.
The clearest migration path in 2026 is Mailchimp → CampaignOS: businesses outgrowing Mailchimp’s free tier or paying increasing per-contact fees migrate to self-hosted CampaignOS to eliminate per-contact costs. CampaignOS’s import tools handle Mailchimp exports cleanly.
Frequently Asked Questions
Is CampaignOS better than Mautic?
CampaignOS has a better user experience and native multi-channel support (email + SMS + push without plugins). Mautic has more total features and a larger existing community and ecosystem. For teams starting fresh in 2026, CampaignOS’s modern interface and active development roadmap make it the better choice for most use cases. For teams already running Mautic or needing its specific advanced features, staying on Mautic is reasonable.
Why is Mailchimp more expensive than CampaignOS at scale?
Mailchimp charges per contact stored in your account. At 50,000 contacts, that’s ~$350/month. CampaignOS is self-hosted open-source — your server costs stay flat regardless of contact volume. At 50,000 contacts, you’re paying ~$20/month for a server. The difference is $330/month ($3,960/year) in favor of CampaignOS. At 100,000 contacts, the gap grows to over $9,000/year.
Does Mailchimp have better deliverability than CampaignOS?
Mailchimp manages deliverability infrastructure for you (shared IP pools, reputation management). CampaignOS requires you to connect an email delivery service (Amazon SES, Postmark) — but this gives you more control and often better deliverability because you’re not sharing reputation with other Mailchimp senders. Properly configured self-hosted sending via Amazon SES achieves excellent deliverability with correct DKIM/SPF/DMARC setup.
Which platform is easiest to migrate contacts from?
All three support CSV export of contact lists. Mailchimp also has native integrations with many receiving platforms. CampaignOS and Mautic both support bulk CSV import. The actual migration — exporting contacts, cleaning the list, importing to the new platform — typically takes 1-2 hours for up to 50,000 contacts with basic technical proficiency.
Is Mautic still actively maintained in 2026?
Yes. Mautic is actively maintained with regular releases. Acquia’s stewardship of Mautic has raised some community questions about governance, but the open-source community continues active development. Mautic 5.x is the current major version with updated architecture. For new deployments, check the GitHub release cadence to confirm continued activity.
Can I run CampaignOS and Mautic together?
Technically yes, but there’s rarely a reason to. Running two full marketing automation platforms creates data synchronization problems and doubles your maintenance burden. If you’re evaluating between them, pilot one fully before committing. If you have legacy Mautic data you want to migrate to CampaignOS, export and import rather than running both simultaneously.
The Modern Choice in This Comparison
CampaignOS combines the data ownership and cost advantages of open-source with a modern UI that Mautic doesn’t match and multi-channel capability that Mailchimp doesn’t offer. For businesses making a fresh choice in 2026, it’s the strongest all-around option.