Newsletters
NewsletterNewsletters
Providers using this tag (29)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Exemplar 7 Complete, well-documented, and agent-ready
Strong 6 Solid coverage with minor gaps
Thin 3 Limited public surface area
Minimal 5 Almost no public developer surface
APIs with this tag (14)
Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →
Exemplar 3 Complete, well-documented, and agent-ready
Strong 6 Solid coverage with minor gaps
Developing 4 Usable, with meaningful gaps to close
Emerging 1 Early or largely undocumented
Companies reaching this through an API (10)
These companies publish an API, specification or operation carrying “Newsletters” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.
Score breakdown
Related tags
Where this tag comes from
Cohort brief
Auto-generatedThe 29 providers in the APIs.io catalog tagged Newsletters, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Access Clarity | 58.7 | 26.5 | +32.2 | 29 |
| Operational Transparency | 36.9 | 13.7 | +23.2 | 29 |
| Developer Ergonomics | 45.6 | 23.2 | +22.4 | 29 |
| Contract Quality | 31 | 17.6 | +13.4 | 29 |
| Contract Governance | 10.9 | 6.3 | +4.6 | 29 |
| Discoverability | 62.4 | 58.1 | +4.3 | 29 |
A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 38% | 14% | +24 |
| MCP server (first-party) | 34% | 12% | +22 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 31% | 11% | +20 |
| Security | 97% | 98% | -1 |
| Arazzo workflows | 3% | 2% | +1 |
| Governance rules | 17% | 14% | +3 |
mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.
- 1 Mailchimp 79.2
- 2 Kit 78.5
- 3 Ghost 78
- 4 MailerLite 73.7
- 5 beehiiv 73.1
- 6 GetResponse 71.6
- 7 AWeber 67.7
- 8 Campaign Monitor 66.1
- 9 Buttondown 64.4
- 10 Moosend 62.1
- 1 beehiiv 61.2
- 2 Kit 60.4
- 3 MailerLite 54.3
- 4 GetResponse 47.8
- 5 Paragraph 45.3
- 6 Mailchimp 42.6
- 7 AWeber 39.7
- 8 MailOptin 39.2
- 9 Buttondown 39
- 10 Jeeng 33.3
Work with this as data
Every tag here is available over the APIs.io API and to AI agents over MCP.