# Mailgun

**Canonical:** https://apis.io/providers/mailgun/  
**Website:** https://www.mailgun.com  
**APIs profiled:** 8

Mailgun (by Sinch) is a transactional email API service for developers to send, receive, validate, and track emails at scale. The platform provides SMTP and HTTP APIs for sending email, inbound message routing, deliverability analytics, suppression management, and email validation with regional endpoints for US and EU data residency.

## Kin Score — 34.4 / 100 (thin)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 34.4).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 54.6 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 33.3 |
| Commercial Clarity | 31.6 |
| Access Clarity | 31.6 |

## Agent readiness — 26.1 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| 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 |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (8)

- **Mailgun Email Validation API** — REST API for verifying email addresses in real time, bulk list validation, and deliverability scoring to reduce bounces and improve sender reputation.
- **Mailgun Domains API** — The Domains API from Mailgun — 2 operation(s) for domains.
- **Mailgun Events API** — The Events API from Mailgun — 1 operation(s) for events.
- **Mailgun Mailing Lists API** — The Mailing Lists API from Mailgun — 1 operation(s) for mailing lists.
- **Mailgun Messages API** — The Messages API from Mailgun — 2 operation(s) for messages.
- **Mailgun Routes API** — The Routes API from Mailgun — 1 operation(s) for routes.
- **Mailgun Suppressions API** — The Suppressions API from Mailgun — 3 operation(s) for suppressions.
- **Mailgun Webhooks API** — The Webhooks API from Mailgun — 2 operation(s) for webhooks.

## Agentic access (1)

- **Mailgun Agentic Access** — 17 operations · 8 acting

## Security (3)

- **Mailgun Authentication** — http · 1 scheme
- **Mailgun Domain Security** — TLSv1.3 · HSTS · DMARC
- **Mailgun Trust Center** — SOC 2, ISO 27001, PCI DSS, HIPAA, GDPR

## Tags

Email, Transactional Email, SMTP, Email Validation, Email Delivery, Messaging

---

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