---
title: "Email validation and trust score: scores an email address from 0 to 99 with AI-generated reasoning, flagging disposable and temporary addresses, suspicious patterns, and deliverability risk. For signup fraud prevention, lead quality scoring, list cleaning, and trial abuse detection."
method: GET
path: "/emailtrustscore"
tags: ["data-enrichment"]
---

# Email validation and trust score: scores an email address from 0 to 99 with AI-generated reasoning, flagging disposable and temporary addresses, suspicious patterns, and deliverability risk. For signup fraud prevention, lead quality scoring, list cleaning, and trial abuse detection.

`GET /emailtrustscore`

## Request

- Base URL: `https://api.interzoid.com`
- URL: `https://api.interzoid.com/emailtrustscore`
- Auth: one of:
  - API key in header `x-api-key`
  - none

## Query parameters

- `lookup` string, required
- `language` string

## Response `200`

Successful response

## Other responses

- `400`: Missing or invalid parameters
- `402`: Payment Required. Returns an x402 challenge with payment requirements in the Payment-Required header and JSON body.

## Changes

- **2026-10-29** `545fadba397f`: 1 info
  - added the new optional `query` request parameter `language`

[Operation history](https://skmtc.dev/interzoid/apis/interzoid-data-quality-and-enrichment-apis/changes/emailtrustscore/get.md)

---

[API](https://skmtc.dev/interzoid/apis/interzoid-data-quality-and-enrichment-apis.md) - [All operations](https://skmtc.dev/interzoid/apis/interzoid-data-quality-and-enrichment-apis/llms.txt) - [OpenAPI document](https://skmtc.dev/interzoid/apis/interzoid-data-quality-and-enrichment-apis/revisions/545fadba397f?raw)