# Posteo

**Canonical:** https://apis.io/providers/posteo/  
**Website:** https://posteo.de/  
**APIs profiled:** 0

Posteo is a German email service provider focused on privacy, security, and sustainability. It offers ad‑free, encrypted email with strong data protection, green hosting powered by renewable energy, and features such as DANE, OpenPGP, and two‑factor authentication. The service emphasizes user anonymity, no tracking, and transparent policies, positioning itself as a secure alternative to mainstream email providers.

## Kin Score — 16.5 / 100 (emerging)

Scored 2026-10-31 under rubric 0.25.0.

| Facet | Score |
|---|---|
| Discoverability | 46.4 |
| Contract Quality | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 5.3 |
| Developer Ergonomics | 35.7 |
| Access Clarity | 21.1 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 13.7 (matched via fallback).

## Agent readiness — 3.1 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| 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 | na |
| Operation Distinctiveness | na |

## Security (1)

- **Posteo Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC

## Tags

Email, Privacy, Security, Sustainability, German

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