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AgentMail
100Programmatic email API for AI agents — create inboxes, send/receive messages, and manage threads with simple API key auth.
OpenAPI SpecAPI KeyFreemiumJSONBot Blocking: NoneNo CCemailai-agentsinboxeswebhooksthreading
Pros
- + Purpose-built for AI agents — no OAuth flows, just API key auth and instant inbox creation
- + Full two-way email with threading, labels, and webhooks for event-driven agent workflows
- + Typed SDKs for Python, TypeScript, and Go with idempotent request support
Cons
- - Free tier is restrictive (3 inboxes, 100 emails/day)
- - No custom domains on free plan — agents send from agentmail.to addresses
Integration
example.py
from agentmail import AgentMail
client = AgentMail(api_key="am_...")inbox = client.inboxes.create()client.inboxes.messages.send( inbox.inbox_id, to="user@example.com", subject="Hello", text="Hello from my agent!")Details
- Category
- Pricing
- Freemium
- Free Tier
- 3 inboxes, 3,000 emails/month, 100 emails/day
- Rate Limit
- 100 emails/day on free tier; no rate limits on paid plans
- Verified
- 2026-03-31
Score Breakdown
Base +50
OpenAPI Spec (Yes) +15
Auth Complexity (API Key) +10
Response Format (JSON) +10
Bot Blocking (None) +10
No Credit Card (Yes) +5
Completely Free (No) 0
Total 100