# ActiveCampaign vs Mailchimp Marketing API (slim)

> Mailchimp Marketing API scores 57.4 (C) on agent readiness against ActiveCampaign's 50.5 (D), and leads in 5 of 7 scored categories. ActiveCampaign leads on reliability and payments & pricing. Both do marketing profiles. Category scores, facts, verdicts and agent notes side by…

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Mailchimp Marketing API scores 57.4 (C) on agent readiness against ActiveCampaign's 50.5 (D), and leads in 5 of 7 scored categories. ActiveCampaign leads on reliability and payments & pricing. Both do marketing profiles.

- ActiveCampaign: D 50.5, rank #684 of 842 · https://www.anchorterminal.com/tools/activecampaign.min.md
- Mailchimp Marketing API: C 57.4, rank #549 of 842 · https://www.anchorterminal.com/tools/mailchimp-marketing.min.md
- ActiveCampaign, good for Small and mid-sized teams already on ActiveCampaign that want an agent to maintain contacts, segments and campaign drafts and enrol contacts in automations. Ahead on Reliability, 67 against 60; Payments & pricing, 30 against 25. Also Free to start without a card.
- Mailchimp Marketing API, good for Small businesses already on Mailchimp that want an agent to sync contacts, tag and segment them, record events, draft and schedule campaigns and read reports. Ahead on Schema & documentation, 76 against 68; Agent ergonomics, 73 against 52; Security & auth, 46 against 33; Maintenance & community, 63 against 35; Transparency & trust, 74 against 57. Also A hosted endpoint, with nothing to install.

| Category | ActiveCampaign | Mailchimp Marketing API |
| --- | --- | --- |
| Reliability (16%) | 67 | 60 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 68 | 76 |
| Agent ergonomics (13%) | 52 | 73 |
| Security & auth (14%) | 33 | 46 |
| Payments & pricing (10%) | 30 | 25 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 35 | 63 |
| Transparency & trust (7%) | 57 | 74 |

| Fact (where they differ) | ActiveCampaign | Mailchimp Marketing API |
| --- | --- | --- |
| Vendor | ActiveCampaign, LLC | Intuit Mailchimp |
| Hosted endpoint | no (local only) | `https://api.mailchimp.com/3.0` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Pricing | Paid | Freemium |
| Licence | Proprietary service under ActiveCampaign's terms of service and API licence agreement | Proprietary service under Mailchimp's Standard Terms of Use and API Use Policy. The generated client libraries declare Apache-2.0 in their package metadata |
| Tools exposed | 50 | none |
| Last release | 2026-09-02 | 2026-10-05 |
| Terms last updated | 2025-12-23 | no date given |
| Privacy policy last updated | 2026-10-01 | 2026-03-09 |
| Terms restrict automated access | yes | not found in the text |
| Popularity | none | 278k npm/wk, 111k PyPI/wk |