# Mail-in-a-Box

**Canonical:** https://apis.io/providers/mail-in-a-box/  
**Website:** https://mailinabox.email/  
**APIs profiled:** 1

Mail-in-a-Box provides an easy-to-deploy, self-hosted mail server solution that includes a web-based control panel and a RESTful HTTP API for managing email accounts, DNS records, backups, and system monitoring. It aims to give users control over their email infrastructure while simplifying setup and maintenance.

## Kin Score — 29.8 / 100 (thin)

Scored 2026-10-31 under rubric 0.25.0.

| Facet | Score |
|---|---|
| Discoverability | 62.5 |
| Contract Quality | 63.3 |
| Contract Governance | 22.0 |
| Operational Transparency | 5.3 |
| Developer Ergonomics | 20.8 |
| Access Clarity | 0.0 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 16.7 (matched via fallback).

## Agent readiness — 22.6 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | derived |
| OpenAPI Examples | verified |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | derived |
| 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 | no |

## APIs (7)

- **Mail-in-a-Box DNS API** — DNS operations, which include adding custom records, adding a secondary nameserver and viewing all DNS records.
- **Mail-in-a-Box Mail API** — Mail operations, which include getting all users, getting all aliases, adding/updating/removing users and aliases and getting all mail domains.
- **Mail-in-a-Box MFA API** — Manage multi-factor authentication schemes. Currently, only TOTP is supported.
- **Mail-in-a-Box SSL API** — TLS (SSL) Certificates operations, which include checking certificate status and installing custom certificates.
- **Mail-in-a-Box System API** — System operations, which include system status checks, new version checks and reboot status.
- **Mail-in-a-Box User API** — Endpoints related to user authentication.
- **Mail-in-a-Box Web API** — Static web hosting operations, which include getting domain information and updating domain root directories.

## Agentic access (1)

- **Mail In A Box Agentic Access** — 49 operations · 28 acting · 2 human-in-the-loop

## Security (2)

- **Mail In A Box Authentication** — http · 1 scheme
- **Mail In A Box Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC

## Tags

Company, Email, Self-hosted, Open-source, Automation, Privacy

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