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Free Email Provider Checker

Separate personal mailboxes from real business domains.

Email Validator Tools Reviews Free · no sign-up

Drop a .csv or .txt list here, or click to choose

Quick Tool Overview

The Free Email Provider Checker separates personal mailboxes from company domains, matching against more than 150 free providers worldwide and reporting the split with the business domains listed out.

What it does
Tells free consumer addresses from real business domains
You give it
One address or a whole list
You get back
The split, the top providers and the business domains
Providers covered
More than 150, including regional ones
Best for
Scoring a B2B list or qualifying inbound leads
Email Validator Tools Free, unlimited use No sign-up Runs in your browser

About the Free Email Provider Checker

For a B2B list, the split between free consumer mailboxes and real company domains is the first thing worth knowing. A list that is 80% Gmail is not a list of businesses, whatever the form said, and a lead scoring model that ignores this is scoring noise.

Paste your addresses and each domain is checked against a bundled list of more than 150 free providers — Gmail, Yahoo, Outlook, Hotmail, iCloud, Proton, GMX, Yandex, Mail.ru, QQ, Naver and the regional ones that are easy to miss because they are not common in English-speaking markets.

You get the split as a percentage, the top providers by count, and the business domains listed separately with how many addresses each one has — which is usually the more interesting half.

Key features of the Free Email Provider Checker

Global provider list

Not just Gmail and Outlook — Mail.ru, QQ, Naver, GMX and more.

Workspace domains handled

A company on Google Workspace counts as a business address.

Business domains ranked

Company domains listed with an address count each.

Disposables kept separate

A throwaway domain is a different problem, and counted as one.

Runs in the browser

No upload and no per-address charge.

How to use the Free Email Provider Checker

  1. 1

    Paste your list

    Any separator: line breaks, commas, semicolons or tabs.

  2. 2

    Read the split

    What share of the list is free consumer mail versus business.

  3. 3

    Check the providers

    Which free providers dominate, and by how much.

  4. 4

    Take the business list

    Company domains, with an address count for each.

Frequently asked questions

Any service that gives anyone a mailbox at its own domain at no cost — Gmail, Yahoo, Outlook, iCloud, Proton, GMX, Mail.ru and so on. The address is real and permanent; it just does not belong to a company.

Reviews of the Free Email Provider Checker

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