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Disposable Email Checker

Spot throwaway and temporary mailboxes in a list.

Email Validator Tools Reviews Free · no sign-up

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

Quick Tool Overview

The Disposable Email Checker matches every domain in a list against several hundred throwaway mailbox providers — Mailinator, Guerrilla Mail, 10 Minute Mail, Yopmail and the rest — and separates them out.

What it does
Finds temporary and throwaway addresses in a list
You give it
One address or a whole list
You get back
The disposable ones, the clean ones and a count of each
List size
Several hundred of the providers that actually appear in signups
Best for
Cleaning free-trial and discount-code signups
Email Validator Tools Free, unlimited use No sign-up Runs in your browser

About the Disposable Email Checker

A throwaway address accepts your confirmation email, gets the discount code out of it, and stops existing an hour later. It then bounces every message you send it for the rest of the list’s life, which is what makes these worth finding before a send rather than after one.

Paste one address or a whole list and every domain is checked against a bundled list of the providers that actually turn up in signups — Mailinator, Guerrilla Mail, 10 Minute Mail, Yopmail, temp-mail, Trashmail, Dropmail and several hundred more, including the alias relays people use for exactly the same purpose.

The result separates the throwaways from the rest, counts how much of the list they are, and lets you copy either side — the clean addresses to keep, or the disposable ones to suppress.

Key features of the Disposable Email Checker

Hundreds of providers

The throwaway services that really turn up in signup data.

Alias relays flagged too

Forwarding aliases behave the same way for deliverability.

Both lists returned

Copy the clean addresses, or the ones to suppress.

Domain grouping

See which throwaway domains dominate, and how many each has.

Honest about coverage

No bundled list is complete, and the page says so.

How to use the Disposable Email Checker

  1. 1

    Paste your addresses

    One per line, or a whole list separated any reasonable way.

  2. 2

    Read the count

    How many disposable addresses there are, and what share of the list.

  3. 3

    Review the domains

    Every throwaway domain found is listed with its own count.

  4. 4

    Copy the side you need

    The clean list to keep, or the disposable one to suppress.

Frequently asked questions

One from a service that hands out a mailbox with no signup and deletes it shortly after — Mailinator, Guerrilla Mail, 10 Minute Mail and hundreds like them. The address is real while it lasts, which is why it passes a syntax check and still should not go on a list.

Reviews of the Disposable Email Checker

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