AgentMail

What is AgentMail?

AgentMail is an email inbox API for AI agents. It provides agents with real email inboxes (like Gmail does for people) so they can create, send, receive, and search email messages via a REST API as part of autonomous or agentic workflows.

Unlike notification-focused email APIs, AgentMail is designed for two-way conversations: agents can read emails, understand message context (including threads), and reply through the same API-driven inbox workflow.

Key Features

• Inboxes API (create, manage, operate via API): Provision and control email inboxes programmatically, rather than managing inboxes manually.
• Threads and replies: Supports conversation-style interactions so agent replies can align with existing message threads.
• Attachments: Enables agents to work with email attachments, not just plain message bodies.
• Realtime events: Provides realtime updates/events so your system can react as new messages arrive.
• Custom domains: Allows inboxes to be created under custom domains.
• Developer tooling (typed SDKs + webhooks): Offers SDKs and webhook-based integration alongside RESTful endpoints.
• Semantic search and data extraction: Adds semantic search capabilities and extraction workflows for working with message contents and extracted data.

How to Use AgentMail

1. Start with the SDKs or API. The site shows getting started in Python and includes support for TypeScript and cURL.
2. Create an inbox. Use the API to create an inbox (the example creates an inbox with username="hello" and domain="agentmail.to").
3. Send a message and observe realtime delivery. The “Live Inbox” demo indicates messages can appear in real time after you send an email.
4. Build conversation flows. Use the inbox, threading/replies, attachments handling, and realtime events to implement agent behavior such as responding, routing, or extracting data.

Use Cases

• Browser agents extracting one-time codes (2FA): When signing up for services, a browser automation agent can monitor inboxes and extract OTP/2FA codes from incoming email.
• Executive assistant scheduling via email: An agent can receive scheduling requests, manage meeting workflows, and send back confirmations or summaries through email.
• Document and attachment processing: Agents can parse attachments such as invoices or receipts and extract relevant information from the contents of those emails.
• Customer service smart routing: Support emails can be ingested into an inbox, then routed to the right handler based on message content and conversation context.
• Agent-to-agent or workflow communications: Any agentic system that needs multi-turn email conversations (not just notifications) can use threads and replies to maintain context.

FAQ

• What is AgentMail, and how is it different from a traditional email API? AgentMail is an API-first email platform for AI agents. It’s built for two-way conversations (reading, replying, and threading), whereas many traditional email APIs are oriented toward one-way notifications.

• Can I use my own custom domain? Yes. AgentMail supports custom domains for inboxes.

• Does AgentMail support attachments? Yes. The platform includes attachment handling as part of its inbox/email capabilities.

• How do I get updates when new messages arrive? AgentMail includes realtime events, and the platform also references webhooks as part of the integration approach.

• Is AgentMail integrated with Gmail? The provided page does not state a Gmail integration. It describes inbox provisioning and interaction through the AgentMail API.

Alternatives

• Transactional email APIs (notification-focused): Email services designed for sending messages can help with outbound email, but they typically aren’t designed to provide agent-owned inboxes with realtime conversation/thread workflows.
• IMAP/SMTP-based inbox automation: Teams can build an email handling layer using IMAP for reading and SMTP for sending, but they must implement inbox provisioning, reliability, threading logic, and message parsing themselves.
• Email parsing and workflow automation platforms: Tools focused on routing and extracting from inbound mail can support parts of the workflow, but may not provide the API-first agent inbox model described by AgentMail.
• Agent orchestration frameworks with custom email connectors: Agent platforms can enable agentic workflows, but you’d still need an email connector or service to manage inboxes, realtime updates, and replies in threads.