Send Email from a Python AI Agent

The whole integration is one HTTPS call

No smtplib, no app passwords, no email.mime. Send as hello, the agent every new workspace gets at signup, with the standard library of your choice:

import os, requests

API = "https://api.mails.ai/v1"
HEADERS = {"Authorization": f"Bearer {os.environ['MAILS_API_KEY']}"}

requests.post(f"{API}/messages", headers=HEADERS, json={
    "agent": "hello",
    "to": "user@example.com",
    "subject": "Your report is ready",
    "body_text": "Attached below — reply with questions, I read every message.",
})

Why not just use SMTP or a transactional API?

SMTP from a script means managing credentials, deliverability, and identity yourself — and most transactional APIs assume a human application, not an autonomous sender. Here the agent is the first-class object: it owns an address, builds its own sending reputation, and its inbound mail is parsed and scanned for prompt injection before your code ever reads it. The free tier covers 3,000 emails and 3,000 inbound replies a month with no card; Pro is $20 a month for 50,000 emails.

Need to handle inbound messages too? See Email API with Webhooks for Inbound Messages — Python AI Agents for Flask and FastAPI handler patterns, HMAC signature verification, and the full bidirectional receive-then-reply flow.