AI agent that replies to emails
The identity and email layer for AI agents that reply to emails. Every agent gets its own inbox, threaded conversations, and real-time webhooks so replies land in context.
The problem
Your agent monitors a shared inbox in Gmail or Front, but has no identity of its own to reply from.
Replies sent through Intercom or Zendesk lose threading, so the recipient sees a new message instead of a continued conversation.
Using a team member's OAuth token for automated replies gets flagged as suspicious and revoked without warning.
There is no record of which replies came from the agent and which from a human, making audits guesswork.
At volume, replies from a shared domain tank sender reputation for every agent and human on the account.
The solution
AgentMail is the identity and email layer for agents that reply to emails.
Dedicated inbox per agent
Each agent replies from its own address. Recipients see a consistent sender identity, and the agent builds its own reputation over time.
Real-time inbound webhooks
When a new email arrives, a webhook fires with the full message and thread history so your agent can craft a contextual reply immediately.
Native threading with reply()
Every reply stays in the original thread. The recipient sees one clean conversation, and the agent retains full context for the next response.
Full audit trail
Every inbound message, outbound reply, and routing decision is logged. Know exactly what the agent said, when, and in response to what.
What your reply agents can do
Inbound
Receive and classify incoming email
Webhooks deliver each inbound message with sender, subject, body, and thread ID. Your agent classifies intent before deciding how to respond.
Replies
Reply in-thread with full context
The agent calls reply() with the message ID, keeping the conversation in a single thread the recipient can follow naturally.
Escalation
Escalate when confidence is low
If the agent cannot handle a message, it forwards the full thread to a human with all prior context attached for a clean handoff.
Isolation
Per-client or per-workflow isolation
Pods separate inboxes by client, department, or workflow. One agent hitting a spam filter does not affect the rest of your fleet.
AgentMail is built to scale.
Redundant infrastructure spanning multiple regions, so a message to your agent lands even when a region does not.
Provision an inbox in milliseconds. Nothing to verify, nothing to wait on.
Typed SDKs, REST endpoints, and webhooks. Your first send goes out the same afternoon.
Wire it up in ten lines
Full quickstart at docs.agentmail.to.
FAQ
Common questions about AgentMail and ai agent that replies to emails.
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