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The AtData Insider’s Guide

Everything we know about AtData in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.

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ToolGPANovember 2026

AtData

The Insider’s Guide

Email verification and email address data through an API

Every plan, grade, refund rule and rival among email verification and deliverability tools, read from AtData’s own pages.

Made by AtData · checked Nov 12, 2026 · toolgpa.com

Contents

  1. 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
  2. 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
  3. 03What it doesIts main features, where it runs, what it works with and who makes it
  4. 04Where it standsIts grades against its category, and whether to keep it or make your own
  5. 05The alternativesThe tools it is most often weighed against, side by side
  6. 06Quick answersThe questions people ask about it, each answered in a line or two
  7. 07About ToolGPAWho made this guide, what else is on the site, and how to cite it

ToolGPA put this guide together from AtData’s own pages, its app-store listings and our grades. Every fact in it is on AtData’s page too, where it is kept up to date. Checked Nov 12, 2026.

Part 01 · Overview

Welcome

What it is, who it suits, its grades and the ten things to know first

AtData sells email address data services built on its own history of email and postal data. Its SafeToSend API checks whether an address is valid and safe to send to, a List Guard service re-checks a stored list on a schedule, and separate APIs append demographic data or alternate contact points to an email address.

To get you started, here are 6 things to know about AtData, taken from its own pages and our grades.

  1. 1

    You can try it first

    Docs mention free trials, with no size or length stated; API keys come via support.

  2. 2

    It runs on Web

    Web.

  3. 3

    SafeToSend verification

    A GET endpoint that checks syntax, corrects misspellings, checks the mailbox and domain, and flags spam traps and other high-risk addresses. It returns one of 30 status codes.

  4. 4

    Quality score

    A 0 to 10 score based on open signals, website visits and e-commerce activity tied to the address. The docs say it comes with a SafeToSend subscription and is not available to credit users.

  5. 5

    List Guard monitoring

    Checks a stored email list for dead and toxic addresses on a regular basis. Results can be read in the InstantData account or pulled by API as CSV.

  6. 6

    Keep it

    Nothing AtData does is plain enough to make in a weekend. The 2 things listed below take a company.

AtData at a glance

Pricing
Free trial
Free plan
No
Free trial
Docs mention free trials, with no size or length stated; API keys come via support.
Runs on
Web
Made by
AtData
Category
Email Verification & Deliverability

Good to know

Good for

  • Developers adding email checks to sign-up or checkout through a REST API
  • Senders with large lists who want scheduled re-checks of stored addresses
  • Teams that want demographic or identity data alongside verification

Worth knowing

  • No prices are published on pages we could read: the site's main pages answered with a bot check, so pricing is recorded as unverified.
  • Getting an API key starts with a request to AtData's support, per the Getting Started guide; there is no self-serve signup described in the docs.
  • The quality score is part of a SafeToSend subscription and is not available to credit-based users.
  • Documentation is API-first, and no mailbox warm-up or DMARC monitoring is described.

Part 02 · Pricing

What it costs

Every plan, the free plan, ways to pay less and how prices have moved

AtData's current pricing could not be confirmed from its own site.

We could not confirm AtData’s current prices from its own site, so this guide lists no plans. atdata.com has them.

Part 03 · Features

What it does

Its main features, where it runs, what it works with and who makes it

1

Place it runs: Web

Email verification and email address data through an API. Here is what it does, as its own site describes it, and what it covers: public API, email verification.

SafeToSend verification
A GET endpoint that checks syntax, corrects misspellings, checks the mailbox and domain, and flags spam traps and other high-risk addresses. It returns one of 30 status codes.
Quality score
A 0 to 10 score based on open signals, website visits and e-commerce activity tied to the address. The docs say it comes with a SafeToSend subscription and is not available to credit users.
List Guard monitoring
Checks a stored email list for dead and toxic addresses on a regular basis. Results can be read in the InstantData account or pulled by API as CSV.
Bulk list API
Runs files of up to 1,000,000 records through SafeToSend, email validation, demographics or identity matching.
Identity matching and demographics
Finds an alternate email or postal address from one point of contact, and returns demographic and behavioral data for a single email or postal address.
Website visitor ID and fraud APIs
The docs also cover a website visitor identification script and a separate Fraud Prevention API that uses email intelligence for risk decisions.

Where it runs

  • Web

What it works with

  • SFTP
  • ActiveMQ

AtData is made by AtData.

Part 04 · Standing

Where it stands

Its grades against its category, and whether to keep it or make your own

We do not grade enough email verification and deliverability tools yet to say where AtData stands among them.

Keep it, or make your own?

Whether this is something you could build for yourself with an AI app builder, and what you would give up.

Keep it

Nothing AtData does is plain enough to make in a weekend. The 2 things listed below take a company.

What you could not

  • Checking that an address exists without writing to it.
  • It plugs into other products, SFTP and ActiveMQ among them, and has an API.

What this rests on. AtData’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.

Part 05 · Alternatives

The alternatives

The tools it is most often weighed against, side by side

ZeroBounce, NeverBounce, Kickbox and Email Hippo

The 4 tools AtData is most often weighed against, with where each one differs from it.

Part 06 · Questions

Quick answers

The questions people ask about it, each answered in a line or two

10

Questions, each answered in a line or two

The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.

Is AtData free?

No, AtData is a paid product, but you can try it first. Docs mention free trials, with no size or length stated; API keys come via support.

What platforms does AtData work on?

AtData is available on Web.

Does AtData have an Android app?

No Android app was listed when its pages were read on Nov 12, 2026. AtData is listed for Web.

Does AtData have an iPhone app?

No iPhone app was listed when its pages were read on Nov 12, 2026. AtData is listed for Web.

Is AtData open source?

AtData is not described as open source on its own site, as read on Nov 12, 2026.

Does AtData have an API?

Yes. AtData offers a public API, according to its own site.

What does AtData integrate with?

AtData's listing names SFTP and ActiveMQ. A listing names up to eight integrations, so it may connect to more.

Who makes AtData?

AtData is made by a company of the same name.

What are the alternatives to AtData?

The closest alternatives to AtData in our directory are ZeroBounce, NeverBounce, Kickbox and Email Hippo.

Could I make my own version of AtData?

Nothing AtData does is plain enough to make in a weekend. The 2 things listed below take a company.

Where this guide comes from

The prices, plans, platforms and features were read from AtData’s own pages on Nov 12, 2026.

Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by AtData. Prices change, so check atdata.com before you buy.

Part 07 · About

About ToolGPA

Who made this guide, what else is on the site, and how to cite it

5,038

Tools graded, in 95 categories

ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.

Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.

  • 5,038

    tools graded

  • 95

    categories

  • 739

    price changes on record

  • 579

    apps priced in 12 countries

What else is on toolgpa.com

Scan for the live page

Prices and grades as they are today

Quoting this guide?

Please name ToolGPA and link to the live page, so readers can check the figures for themselves:

ToolGPA, "AtData: The Insider's Guide", checked Nov 12, 2026. https://toolgpa.com/tools/atdata

Know someone choosing between email verification and deliverability tools?

Send them this guide: toolgpa.com/tools/atdata/guide

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See our other guides

The best-graded email verification and deliverability tools after AtData, each with an Insider's Guide of its own.

ToolGPA

Choosing software? Every tool graded, every price dated.

Compare tools at toolgpa.com ›

Everything in this guide is ToolGPA’s own summary of what AtData’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. AtData is a trademark of its owner, and this guide is not made, paid for or approved by AtData. Prices and plans change: check atdata.com before you buy.