Python FastAPI Email Verification Guide

Add real-time email verification and disposable-email blocking to Python FastAPI with the VeriShield Edge API. The snippet below gates a signup and returns the canonical email identity.

Language

Python 3.12

Ecosystem

ASGI / Pydantic

Latency

< 85ms

Install

Shell

pip install httpx fastapi

Verification code

Python 3.12

import os, httpx
from fastapi import HTTPException

async def verify_email_dependency(email: str) -> dict:
    async with httpx.AsyncClient(timeout=3.0) as client:
        resp = await client.post(
            'https://verishield-edge-api.p.rapidapi.com/v1/verify',
            headers={'X-RapidAPI-Key': os.getenv('RAPIDAPI_KEY', '')},
            json={'email': email}
        )
        data = resp.json()
        if data['fraud_risk']['recommendation'] == 'BLOCK':
            raise HTTPException(status_code=403, detail='Blocked disposable/fraud email')
        return data

What this protects against

Disposable and temporary inboxes, Gmail dot-trick and plus-alias multi-accounting, high-entropy bot usernames, and freshly registered fraud domains. The API returns a 0-100 fraud score with an ALLOW, CHALLENGE_2FA or BLOCK recommendation.

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