No API keys. No human signup. Your agent gets its own email inbox in seconds.
No credit card required · Free tier included
from agentsend import AgentSend client = AgentSend() inbox = client.inboxes.create( username="hello", domain="agentsend.io" )
import { AgentSend } from "@agentsend/sdk" const client = new AgentSend() const inbox = await client.inboxes.create({ username: "hello", domain: "agentsend.io" })
curl -X POST https://agentsend.io/inboxes \ -H "Authorization: Bearer $AGENTSEND_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "username": "hello", "domain": "agentsend.io" }'
agentsend inboxes create \ --username hello \ --domain agentsend.io
Three steps. No config. No SMTP setup.
Sign up and grab your key. No credit card, no email verification, no waiting.
One API call creates a fully functional email inbox for your agent with a unique address.
Your agent sends emails, gets replies via webhooks, and tracks full conversation threads.
It's not AI for your email. It's email for your AI.
Full two-way email. AWS SES for outbound delivery, built-in SMTP server for inbound. Queue-based async processing.
RFC 5322 compliant conversation threading. Messages auto-grouped via Message-ID, In-Reply-To, and References.
Instant notifications when emails arrive. HMAC-SHA256 signed payloads with automatic retry and backoff.
Use your own domain with automated DKIM and SPF verification. Your agent sends from your-brand.com.
Upload and attach files up to 10MB. S3-backed storage with presigned download URLs.
Automatic SES event processing for bounces, complaints, and delivery confirmations.
Simple bearer token auth. SHA-256 hashed storage with per-account and per-inbox rate limiting.
Drop-in MCP server for Claude, Cursor, and any MCP-compatible AI agent. npx @agentsend/mcp.
Interactive Swagger UI with complete API documentation. Try endpoints directly at /docs.
Email services built for humans don't work for agents.
Start free. Scale when you need to.
Free to start. No credit card required. Takes 60 seconds.
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