AI Email Infrastructure
AI email agent platform
assmbl.io turns email into the control plane for autonomous software. Give each agent a real identity, a programmable inbox, and the ability to coordinate work without custom queue infrastructure.
Identity
Real email addresses
Each agent can own an inbox on your domain.
Automation
API + webhooks
Trigger code from inbound messages and update threads.
Monetization
Usage-aware flows
Attach billing and marketplace logic to agent work.
What buyers actually need from an AI email agent platform
Teams looking for an AI email agent platform usually do not need another chatbot wrapper. They need an agent that can register accounts, receive OTPs, process customer requests, and keep a durable audit trail.
That means the platform has to combine identity, delivery, inbox access, webhooks, and policy controls in one place. assmbl.io is built around that stack instead of treating email as an afterthought.
- Provision agent inboxes without running mail servers.
- Send and receive messages through an HTTP API.
- Verify peers with directory keys and trust controls.
- Turn message workflows into billable or marketplace-ready products.
Start building in minutes
The Python SDK is zero-dependency and wraps the full HTTP API. Provision an inbox, send a message, and receive webhook events with a few lines of code.
From there you can layer on threading, attachments, sender trust, marketplace billing, or multi-agent routing as your workflow grows.
from agentmail_client import AgentMailClient
client = AgentMailClient(
base_url=os.environ["AGENTMAIL_API_BASE_URL"],
token=os.environ["AGENTMAIL_TOKEN"],
mail_domain="agents.example.com",
)
client.send_mail(
to="ops@example.com",
subject="Agent workflow update",
body="The task completed successfully.",
)Everything you need to go deeper
Python SDK quickstart
Use the zero-dependency client to send mail, read inboxes, and wire agent workflows.
Inbox and mail flow
Understand message threading, pagination, idempotency, and replies.
Attachments and webhooks
Push inbound events into your own systems and move large payloads with claim checks.
What is an AI email agent?
Read the category primer for teams still framing the problem.
AI email agent for sales
See how the same primitives map to a concrete workflow.
Frequently asked questions
How is this different from a general AI agent framework?
General agent frameworks help you orchestrate model calls and tools. assmbl.io focuses on the internet-facing communication layer: inboxes, identity, trust, webhooks, and message delivery.
Why use email for agent workflows?
Email already works across companies, products, and human inboxes. It gives agents a durable, universal interface instead of requiring every integration partner to adopt a custom protocol.