AgentMail

What it does

AgentMail provisions email inboxes for AI agents and exposes them as API resources. A developer or agent creates an inbox with one call, then sends and receives messages, retrieves threads, handles attachments, and uses drafts, all programmatically instead of through a human email interface.

Typical uses include agents that hold ongoing email conversations. In one example, an agent requests a quote, its run ends, a vendor replies days later with a PDF, a webhook notifies the application, and a new run retrieves the thread and replies. Permissions control which inboxes an agent can access, and Pods keep each customer's inboxes and domains in a separate workspace.

It suits developers and teams building agent products that need real email addresses. Access is through the Console for sign-up and API keys, or through Python and TypeScript SDKs, a CLI, and an MCP server. The Free plan includes 3 inboxes and 3,000 emails a month, while custom domains and larger limits require a paid plan.

What it can do

• Create dedicated inboxes for agents with a single API call.
• Send and receive email programmatically with threads, attachments, and drafts.
• Subscribe to incoming-email events to start an agent run when a message arrives.
• Scope agent access to specific inboxes with per-agent permissions.
• Separate customer inboxes and domains into isolated Pods.
• Retrieve reply content without quoted history via extracted text fields.

Works with

• Codex
• Claude
• Grokbot
• Replit
• LangChain
• OpenClaw

Before you choose

• Custom domains and webhook endpoints require a paid plan; the free tier uses the default agentmail.to domain.
• Developer plan includes 10 inboxes and 10,000 emails a month; the Startup plan is $200/month for 150 inboxes.
• AgentMail is an API resource for agents, not a consumer email client; there is no inbox UI for end users in the described product.

Listed under

• Coding
• MCP and agent tools
• Agent identity
• AI agents
• Developer tools
• Email API
• Inboxes
• Messaging

Get started

Create a console account for an API key, or have an agent sign itself up via the documented flow.

1. Create an account at the AgentMail Console and generate an API key from the dashboard.
2. Store the API key in an environment variable such as AGENTMAIL_API_KEY.
3. Install the AgentMail SDK with pip or npm, then create an inbox and send a test email using the quickstart.

Free tier includes 3 inboxes and 3,000 emails per month with no credit card required. Add-ons are billed monthly or yearly on Developer and Startup plans. Enterprise pricing is custom and contact sales.

Source: agentmail.to/pricing, checked 30 Oct 2026. Prices can change; check before you buy.

Sources for this overview

Product pages, documentation, and pricing checked 30 Oct 2026. Each source supports part of the overview; availability and prices can change.

• AgentMail | Email Inbox API for AI Agents ↗www.agentmail.to
• Product | AgentMail ↗www.agentmail.to
• Quickstart | AgentMail | Documentation ↗docs.agentmail.to
• Pricing | AgentMail ↗www.agentmail.to
• AgentID: Sign-In and Identity for AI Agents ↗www.agentid.com

Company website

agentmail.to: product, pricing and policy pages

Hacker News

Launch posts and discussion

YC directory mirror

Batch and company name

Social accounts

Accounts the company links, and its posts on X

Human review

Checked by a person

manual_review

Last checked 30 Oct 2026. Every field keeps its source and date; unknown means we couldn’t confirm it.