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updatedAt: 2026-08-25T22:28:05.000Z
agentTools:
projectIndex: https://docs.atdata.com/llms.txt
---
# Overview
AtData specializes in email address verification. We can help you filter out invalid and high-risk email addresses, which results in higher open rates, clicks, and conversions.
## Features
Our SafeToSend Email Verification & Hygiene service provides users with the following:
* **Syntax Engine**: Pinpoints invalid email formats.
* **Email Correction**: Fixes address misspellings.
* **Suppression**: Safeguards your list from spam traps, honeypots, and high-risk emails.
* **Domain Database**: Monitors email domain status for accuracy.
* **Mailbox Check**: Determines whether an address will soft bounce, hard bounce, or deliver.
* **Status Codes**: Returns 30 diagnostic codes distinguishing good emails from bad and why.
* **Quality Score**: A simple 0-10 score, based upon a series of factors including recency and frequency of email open signals, observed website visits, and e-commerce transactions associated with the email.
* **IP Address details**: When IP is provided in the input, the API will return details on the IP, including country and state/province of origin, and the routing type of the IP address.
> 📘 Quality Score
>
> [Quality Score](https://atdata.com/data-enrichment/quality-score/) is free as a part of an AtData SafeToSend Subscription (it is not available for credit users).
## Endpoints
The SafeToSend API offers you the following endpoint:
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## Response Reference
The SafeToSend API response contains several data fields. The following reference details the possible values for some of the fields you will find with this service:
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