Email infrastructure for AI agents
One API call gives any agent a real inbox — to send, receive, hold threaded conversations, fire real-time webhooks, and pull verification codes. Open source and self-hostable, or fully managed.
from agentinbox import Client inbox = client.inboxes.create(username="ava") # -> ava@yourdomain.comclient.messages.send(inbox["id"], to="lead@co.com", subject="hi", text="hello!")code = client.verification_code(inbox["id"]) # latest OTPEverything an agent needs to run email
A complete email stack designed for autonomous software — not humans clicking around a webmail UI.
Programmatic inboxes
Spin up a real, addressable inbox for any agent with a single API call.
Two-way + threading
Send and receive with full threaded conversations, not fire-and-forget sends.
Real-time webhooks
Get a signed webhook the instant a message lands so agents can react.
Verification-code extraction
Pull the latest OTP or magic link out of an inbox without parsing HTML.
Real-time dashboard
Watch inboxes, threads, and deliverability update live as agents work.
No OAuth (API keys)
Authenticate with plain API keys — no OAuth dances or consent screens.
BYO-deliverability
Bring your own sending backend: Amazon SES, SMTP, or your provider of choice.
MCP + framework integrations
Drop into agents via MCP and popular frameworks with first-class tools.
How it works
From zero to a working agent inbox in three steps.
- 01
Create an inbox with one API call
Call inboxes.create() and get a real, addressable email address back instantly.
- 02
Your agent sends & receives real email
Send messages and get replies as fully threaded conversations, both ways.
- 03
React instantly via webhooks
Fire real-time webhooks on every message — or watch it all on the live dashboard.
Three ways to run it
Self-host the open-source core, let us run it for you, or bring it to your enterprise.
Self-host
Open source. Run it yourself with a single script.
- Full email stack, AGPL-licensed
- One command to boot: ./start.sh
- BYO deliverability (SES/SMTP)
- Community support
Managed cloud
We run it: pre-warmed deliverability, zero ops.
- Fully managed — no infrastructure
- Pre-warmed, high-reputation sending
- Autoscaling inboxes & webhooks
- Priority support
Enterprise
Self-host support with the guarantees you need.
- Self-host support & SLAs
- SSO / SAML
- Compliance reviews
- Data residency
Request access to the managed cloud
The fully managed, pre-warmed hosted cloud is live. Tell us what you're building and our team will get you set up with access.