# Lettermint

**Canonical:** https://apis.io/providers/lettermint/  
**Website:** https://lettermint.co/  
**APIs profiled:** 0

Lettermint is a European partner providing transactional email services, offering reliable delivery of transactional, broadcast, and inbound emails. Their platform includes SDKs for multiple languages, a CLI, and an MCP server for AI assistants. Lettermint is ISO/IEC 27001:2022 certified and GDPR compliant, ensuring secure and privacy‑focused email communications for developers and businesses across Europe.

## Kin Score — 53.8 / 100 (developing)

Scored 2026-10-31 under rubric 0.25.0.

| Facet | Score |
|---|---|
| Discoverability | 48.2 |
| Contract Quality | 39.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 55.3 |
| Developer Ergonomics | 76.2 |
| Access Clarity | 76.3 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 25.5 (matched via fallback).

## Agent readiness — 42.1 (agent-ready)

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

## Security (3)

- **Lettermint Authentication** — 1 scheme
- **Lettermint Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC
- **Lettermint Vulnerability Disclosure** — security.txt · contact published

## Plans (1)

- **Lettermint Plans Pricing**

## Tags

Company, Email, Transactional, API, European

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