# Apache James

**Canonical:** https://apis.io/providers/apache-james/  
**APIs profiled:** 9

Apache James (Java Apache Mail Enterprise Server) is a portable and enterprise-ready mail server built entirely in Java. It implements SMTP, IMAP, POP3, and JMAP protocols and provides a modular architecture with a comprehensive administration REST API and Cassandra-backed distributed deployment.

## Kin Score — 39.8 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 39.8).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 59.8 |
| Governance | 25.0 |
| Contract Governance | 25.0 |
| Operational Transparency | 26.3 |
| Developer Ergonomics | 33.3 |
| Commercial Clarity | 26.3 |
| Access Clarity | 26.3 |

## Agent readiness — 35.0 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | verified |
| 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 |

## Access

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

## APIs (9)

- **Apache James JMAP API** — The JMAP (JSON Meta Application Protocol) implementation in James provides a modern, efficient email protocol for synchronizing messages, mailboxes, contacts, and calendars for ...
- **Apache James Domains API** — Email domain management
- **Apache James HealthCheck API** — System health monitoring
- **Apache James Mailboxes API** — Mailbox management
- **Apache James MailQueues API** — Mail queue management
- **Apache James MailRepositories API** — Mail repository management
- **Apache James Quotas API** — Storage and message quota management
- **Apache James Tasks API** — Asynchronous task management
- **Apache James Users API** — User account management

## Agentic access (1)

- **Apache James Agentic Access** — 16 operations · 6 acting

## Security (3)

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

## Plans (1)

- **Apache James Plans Pricing**

## Use cases (4)

- **Enterprise Mail Server** — Deploy a full-featured enterprise mail server with SMTP, IMAP, and JMAP.
- **Mail Server Migration** — Migrate from other mail servers with full protocol compatibility.
- **Automated Email Processing** — Build automated email pipelines using James mailet and matcher APIs.
- **High-Availability Mail** — Deploy distributed James clusters with Cassandra and RabbitMQ for HA.

## Tags

Email, IMAP, Java, JMAP, Mail Server, Open-Source, SMTP

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