AgentMail
AgentMail is an API-first email platform that gives AI agents their own email inboxes to autonomously send, receive, reply to, and act on email. Unlike traditional transactional email APIs built for one-way notifications, AgentMail is designed for two-way threaded conversations: agents create inboxes on demand, read and semantically search messages, manage threads and drafts for human-in-the-loop review, apply labels and allow/block lists, and react to inbound mail in real time over webhooks or WebSockets. It ships a REST API (OpenAPI 3.1), an AsyncAPI 2.6 WebSocket surface, Python/Node/Go SDKs, a CLI, a hosted MCP server, and IMAP/SMTP bridges, with API-key permissions, idempotency, multi-tenant pods, custom domains, and SOC 2 Type I/II compliance.
AgentMail publishes 29 API contracts indexed on the APIs.io network, including Agent API, API Keys API, Auth API, and 26 more. Tagged areas include Company, Artificial Intelligence, Email, AI Agents, and Inbox.
The AgentMail catalog on APIs.io includes 1 event-driven AsyncAPI specification.
AgentMail’s developer surface includes documentation, API reference, getting-started guide, engineering blog, pricing, signup flow, support, and 31 more developer resources.
What this lets a business do 1
Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →
Kin Score
Standards implemented 3
Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.
APIs 29
Individual APIs this provider publishes, each with its own machine-readable definition.
AgentMail Agent API
The agent API from AgentMail — 2 operation(s) for agent.
AgentMail API Keys API
The api-keys API from AgentMail — 2 operation(s) for api-keys.
AgentMail Auth API
The auth API from AgentMail — 1 operation(s) for auth.
AgentMail Domains API
The domains API from AgentMail — 4 operation(s) for domains.
AgentMail Drafts API
The drafts API from AgentMail — 3 operation(s) for drafts.
AgentMail inboxes > api-keys API
The inboxes > api-keys API from AgentMail — 2 operation(s) for inboxes > api-keys.
AgentMail Inboxes API
The inboxes API from AgentMail — 2 operation(s) for inboxes.
AgentMail inboxes > drafts API
The inboxes > drafts API from AgentMail — 4 operation(s) for inboxes > drafts.
AgentMail inboxes > events API
The inboxes > events API from AgentMail — 1 operation(s) for inboxes > events.
AgentMail inboxes > lists API
The inboxes > lists API from AgentMail — 2 operation(s) for inboxes > lists.
AgentMail inboxes > messages API
The inboxes > messages API from AgentMail — 11 operation(s) for inboxes > messages.
AgentMail inboxes > metrics API
The inboxes > metrics API from AgentMail — 2 operation(s) for inboxes > metrics.
AgentMail inboxes > threads API
The inboxes > threads API from AgentMail — 4 operation(s) for inboxes > threads.
AgentMail inboxes > webhooks API
The inboxes > webhooks API from AgentMail — 2 operation(s) for inboxes > webhooks.
AgentMail Lists API
The lists API from AgentMail — 2 operation(s) for lists.
AgentMail Metrics API
The metrics API from AgentMail — 2 operation(s) for metrics.
AgentMail Organizations API
The organizations API from AgentMail — 1 operation(s) for organizations.
AgentMail pods > api-keys API
The pods > api-keys API from AgentMail — 2 operation(s) for pods > api-keys.
AgentMail Pods API
The pods API from AgentMail — 2 operation(s) for pods.
AgentMail pods > domains API
The pods > domains API from AgentMail — 4 operation(s) for pods > domains.
AgentMail pods > drafts API
The pods > drafts API from AgentMail — 3 operation(s) for pods > drafts.
AgentMail pods > inboxes API
The pods > inboxes API from AgentMail — 2 operation(s) for pods > inboxes.
AgentMail pods > lists API
The pods > lists API from AgentMail — 2 operation(s) for pods > lists.
AgentMail pods > metrics API
The pods > metrics API from AgentMail — 2 operation(s) for pods > metrics.
AgentMail pods > threads API
The pods > threads API from AgentMail — 4 operation(s) for pods > threads.
AgentMail pods > webhooks API
The pods > webhooks API from AgentMail — 2 operation(s) for pods > webhooks.
AgentMail Threads API
The threads API from AgentMail — 4 operation(s) for threads.
AgentMail Webhooks API
The webhooks API from AgentMail — 2 operation(s) for webhooks.
AgentMail API Reference API
The API Reference API from AgentMail — 0 operation(s) for api reference.
Scroll for all 29
Open Collections 29
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONAPI Reference agent API
OPEN COLLECTIONAPI Reference agent api-keys API
OPEN COLLECTIONAPI Reference agent auth API
OPEN COLLECTIONAPI Reference agent domains API
OPEN COLLECTIONAPI Reference agent drafts API
OPEN COLLECTIONAPI Reference agent inboxes > api-keys API
OPEN COLLECTIONAPI Reference agent inboxes API
OPEN COLLECTIONAPI Reference agent inboxes > drafts API
OPEN COLLECTIONAPI Reference agent inboxes > events API
OPEN COLLECTIONAPI Reference agent inboxes > lists API
OPEN COLLECTIONAPI Reference agent inboxes > messages API
OPEN COLLECTIONAPI Reference agent inboxes > metrics API
OPEN COLLECTIONAPI Reference agent inboxes > threads API
OPEN COLLECTIONAPI Reference agent inboxes > webhooks API
OPEN COLLECTIONAPI Reference agent lists API
OPEN COLLECTIONAPI Reference agent metrics API
OPEN COLLECTIONAPI Reference agent organizations API
OPEN COLLECTIONAPI Reference agent pods > api-keys API
OPEN COLLECTIONAPI Reference agent pods API
OPEN COLLECTIONAPI Reference agent pods > domains API
OPEN COLLECTIONAPI Reference agent pods > drafts API
OPEN COLLECTIONAPI Reference agent pods > inboxes API
OPEN COLLECTIONAPI Reference agent pods > lists API
OPEN COLLECTIONAPI Reference agent pods > metrics API
OPEN COLLECTIONAPI Reference agent pods > threads API
OPEN COLLECTIONAPI Reference agent pods > webhooks API
OPEN COLLECTIONAPI Reference agent threads API
OPEN COLLECTIONAPI Reference agent webhooks API
OPEN COLLECTIONScroll for all 29
MCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
AgentMail
Email inboxes for AI agents: send, receive, reply, search, and manage threaded email over MCP.
MCP SERVERPricing Plans 2
Published pricing tiers and plan structures.
Rate Limits 1
Documented rate limits and quota policies.
Agentmail Rate Limits
RATE LIMITSEvent Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
API Reference
ASYNCAPIOpenAPI Overlays 1
Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.
Agentmail Openapi Overlay
UNRECORDEDSecurity Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 3
Portal, sign-up, and the first successful call
Documentation 4
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 7
Pagination, idempotency, versioning, errors, and events
Scroll for all 7
Build 4
SDKs, sample code, and the tooling you integrate with
Access & Security 4
Authentication, authorization, and security posture
Operate 4
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 3
Properties that don't map to a standard resource type
Source (apis.yml)
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.