Send email from FastAPI over SMTP

Call Python's SMTP client from a FastAPI route. Same host, username, and API-key password as every other stack.

1. 1

   Send from a route

   Python

   import os
   import smtplib
   from email.message import EmailMessage
   from fastapi import FastAPI
   
   app = FastAPI()
   
   @app.post("/send")
   def send() -> dict[str, bool]:
       msg = EmailMessage()
       msg["From"] = "you@yourdomain.com"
       msg["To"] = "customer@example.com"
       msg["Subject"] = "Hello from FastAPI"
       msg.set_content("Sent via SMTP.")
       with smtplib.SMTP("smtp.unitpost.com", 587) as smtp:
           smtp.starttls()
           smtp.login("unitpost", os.environ["UNITPOST_API_KEY"])
           smtp.send_message(msg)
       return {"ok": True}

2. 2

   Verify delivery

   Confirm in Activity.