Email infrastructure for AI agents
Give every agent its own inbox — send, receive, thread, and act on email autonomously. All the power of a real email stack, priced for fleets of agents, not teams of people — and SMS and iMessage are on the way.
customer@acme.com
Re: Refund for order #1043
billing@stripe.com
Receipt — invoice paid
noreply@github.com
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Everything an agent needs to live in the inbox
An inbox per agent
Create real, addressable inboxes programmatically — one per agent, thousands via API.
Full two-way email
Send and receive from real addresses. Your agents read, parse, and reply autonomously.
Native threading
Replies group into conversations automatically — multi-party, cc, bcc, and forwarding included.
Real-time events
Webhooks and WebSockets stream inbound mail the moment it lands — no polling required.
Production deliverability
Custom domains with SPF, DKIM, and DMARC, plus dedicated sending reputation as you scale.
Multi-tenant ready
Isolate inboxes per customer so platform builders can ship agent email to their own users.
Live in three steps
Create an inbox
One API call gives your agent a real email address and identity.
Send & receive
Your agent emails anyone, and inbound messages stream back via webhook.
Scale the fleet
Spin up thousands of inboxes — pricing stays sane as you grow.
Built on email — expanding to every channel
Email is our core: production-ready inboxes your agents can rely on today. SMS and iMessage are rolling out to early partners — talk to us to get your agents on them first.
Real, addressable inboxes per agent with full two-way send, receive, threading, webhooks, and production deliverability.
Start free →SMS
Give agents a real phone number to text from — two-way SMS with the same inbox, threading, and webhook model as email.
Talk to sales →iMessage
Reach customers in the blue bubble. Agent-native iMessage with delivery and read signals, rolling out to early partners.
Talk to sales →Pricing that scales with your agents
Start free. Pay only as your agent fleet grows — with far more inboxes per dollar than email APIs built for humans.
Scale
For growing agent fleets
- 1,500 inboxes
- 150,000 emails/mo
- Dedicated sending subdomain
- Priority support
Business
For high-volume products
- 15,000 inboxes
- 500,000 emails/mo
- Dedicated sending subdomain
- Priority support
Need more? Enterprise adds unlimited inboxes, dedicated IPs, SLAs, and SSO.
Get early access to SMS & iMessage
These channels aren't self-serve yet. Tell us about your agents and what you want to send — we'll get you set up and onboarded directly.
Already looking at AgentMail?
Same two-way email, threading, and webhooks — with up to 10× the inboxes per plan at a lower price. See the full breakdown.
Give your agents an inbox today
Start free with 3 inboxes and 3,000 emails. Scale to thousands when you're ready.