# checkmails

**Canonical:** https://apis.io/providers/checkmails-eu/  
**Website:** https://checkmails.eu/  
**APIs profiled:** 1

checkmails (checkmails.eu) is a European real-time SMTP email verification service operated by ZENITH SARL (Tourcoing, France; SIREN 104 935 366). It checks addresses live against recipient mail servers (RCPT TO, no email sent), including iCloud/@me/@mac via a dedicated EU proxy, from uploaded Excel/CSV lists, a REST API, an MCP integration for AI assistants, and a free Odoo module. Data is hosted by Scaleway in Paris, payments go through Mollie, files are auto-deleted, and the service is positioned as a GDPR-native alternative to US verifiers.

## Kin Score — 49.9 / 100 (developing)

Scored 2026-11-13 under rubric 0.28.0.

| Facet | Score |
|---|---|
| Discoverability | 65.0 |
| Contract Quality | 58.1 |
| Contract Governance | 22.0 |
| Operational Transparency | 38.1 |
| Developer Ergonomics | 28.6 |
| Access Clarity | 74.5 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 24.5 (matched via fallback).

## Agent readiness — 28.0 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | verified |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |
| Pagination Ratio | no |
| Operation Distinctiveness | na |
| MCP Tool Quality | na |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (4)

- **checkmails MCP Server** — Remote MCP server for email verification from AI assistants, advertised in the checkmails OpenAPI info.description at https://checkmails.eu/api/mcp (connect guide https://checkm...
- **checkmails Bulk API** — The Bulk API from checkmails — 1 operation(s) for bulk.
- **checkmails Jobs API** — The Jobs API from checkmails — 1 operation(s) for jobs.
- **checkmails Verify API** — The Verify API from checkmails — 1 operation(s) for verify.

## MCP servers (1)

- **checkmails MCP server** — Official remote MCP server published by checkmails.eu for SMTP email verification from AI agents (Claude, Cursor, ChatGPT, any MCP client). JSON-RPC 2.0, MCP protocol revision 2...

## Agentic access (1)

- **checkmails Agentic Access** — 3 operations · 2 acting

## Security (2)

- **checkmails Authentication** — http · 1 scheme
- **checkmails Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **checkmails Plans Pricing**

## Tags

Company, Email Verification, SMTP, GDPR, Data Quality, European Union, MCP, Odoo

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/checkmails-eu/). Scores are computed from the provider's own public artifacts under a published rubric.