Inbox API
Create and operate email inboxes programmatically instead of managing them manually. The home page describes inbox creation, management, and operation entirely through API calls.
AgentMail
AgentMail is an email inbox API for AI agents that lets developers create, send, receive, and search messages through API workflows. It offers a free tier, paid plans, and enterprise options for teams building autonomous email-based agents.
Overview
AgentMail is an email inbox API built for AI agents. The product gives software agents their own real email inboxes and lets developers create, send, receive, and search messages through API workflows.
The site positions the product for autonomous and agentic workflows where an agent needs to participate in email conversations rather than just send notifications. It emphasizes two-way messaging, thread history, custom domains, and developer-friendly access through SDKs, MCP, REST endpoints, webhooks, and CLI examples.
Pricing is usage-based with a free tier for getting started, a Developer tier, a Startup tier, and an Enterprise tier with custom terms. The enterprise page adds options such as unlimited inboxes, bulk discounts, white-label platform support, usage-based pricing, EU region cloud, BYO cloud deployment, dedicated IPs, and OIDC/SAML SSO.
Core capabilities
Threads and replies
Work with replies and thread history so agents can hold multi-message conversations rather than only sending one-off notifications.
Attachments
Handle message attachments and use the product for parsing documents such as invoices or receipts where email payloads include files.
Realtime delivery and events
Use realtime events and webhooks to react when mail arrives or changes, which is useful for autonomous workflows that need immediate triggers.
Search and extraction
Search and extract data from messages with semantic search and data extraction capabilities, as described on the home page.
Developer access
Use SDKs, MCP, and RESTful endpoints to integrate with agent tooling and application code. The site also shows Python, TypeScript, cURL, and CLI examples.
Common use cases
Browser sign-up verification
Give browser automation agents a mailbox so they can request verification codes and continue sign-up flows that depend on email OTPs.
Inbox management
Let an agent manage a personal or team inbox by drafting replies, organizing incoming mail, and keeping thread context for back-and-forth conversations.
Document and attachment processing
Parse invoices, receipts, and other emailed files, then route the extracted information into downstream systems or review queues.
Customer support triage
Ingest support mail, classify messages, and route them to the appropriate handler or workflow with follow-up and escalation steps.
Agent templates and outbound workflows
Use templates and agent prompts for outbound messaging, negotiation, scheduling, and other email-driven agent workflows.
Pros and Cons
Pros
- Built specifically for AI agents that need real inboxes and two-way email conversations.
- Supports inbox creation, sending, receiving, thread history, attachments, search, and data extraction from one platform.
- Provides multiple access paths, including REST APIs, SDK examples, MCP, webhooks, and CLI usage on the site.
- Offers a free tier and clearly published paid tiers, which makes it easier to evaluate before committing.
- Includes SOC 2 Type II compliance information and a trust center for security review.
Cons
- The site does not publish a full public docs set in the supplied evidence, so some implementation details remain unclear from the pages reviewed.
- Enterprise capabilities and deployment options are listed, but several are shown as custom or contact-sales items rather than fixed public plan details.
FAQ
What is AgentMail?
AgentMail is an API-first email platform for AI agents. It lets you create inboxes and work with messages over REST-style API workflows so agents can read, reply, and manage threads.
What can you do with AgentMail?
The source pages describe AgentMail as supporting inbox creation, sending and receiving email, thread history, attachments, semantic search, data extraction, custom domains, SDKs, MCP, and webhook-based workflows.
Does AgentMail have a free plan?
The pricing page shows a Free tier, a Developer tier, a Startup tier, and an Enterprise offering with custom terms. The site also indicates a no-credit-card start for the free tier.
Is there an enterprise plan?
Yes. The pricing page includes an Enterprise tier with custom pricing, unlimited inboxes available, bulk discounts, white-label platform options, usage-based pricing, EU region cloud, BYO cloud deployment, dedicated IPs, and OIDC/SAML SSO.
Can I use my own custom domain?
The site says custom domains are supported, and the pricing page includes custom domains in paid tiers. For full setup or edge-case questions, the site points users to docs and support.
Quick Facts
- Category
- Email inbox API for AI agents
- Primary users
- Developers building autonomous or agentic workflows
- Pricing
- Free tier plus paid Developer, Startup, and Enterprise plans
- Deployment
- Cloud service with enterprise options for EU cloud and BYO cloud deployment
- Compliance
- SOC 2 Type II compliant
- Source domain
- agentmail.to
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