Try the Disposable Email Checker
Paste an email address to check whether its domain is a known disposable, temp-mail or throwaway email service. Useful for signups.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
[email protected] -> flagged as a known disposable email domain. [email protected] -> no match, appears to be a standard email provider.Open the Disposable Email Checker
Illustration. Open the tool for the real thing.
See it in action
Sample input: Email address to check = [email protected]
What is the Disposable Email Checker?
Paste any email address and this tool checks its domain against a curated list of well-known disposable, temp-mail and throwaway email services — the same kind of services this site's own Temp Mail tool generates addresses from, used in reverse. This is useful when you're on the receiving end: checking a signup form, a lead capture list, a support ticket or a user registration to see whether someone used a burner address that will likely stop working within hours.
The check also looks for common patterns disposable services use in their domain names (like "temp", "trash", "10minute" or "guerrilla") to catch variants and newer domains that might not yet be on the curated list, and it clearly labels a result as either a known match, a suspicious pattern match, or no match found — being upfront that no fixed list can ever be 100% complete since new disposable services appear constantly.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
Checks against a real, actively maintained list of well-known disposable email providers.
Catches likely disposable domains using common naming patterns, even if not on the exact list.
Paste an address and get a result immediately.
Clearly distinguishes a confirmed match from a pattern-based suspicion, since no list is ever fully complete.
AZRS tools are free to open and use.
It opens in your browser, so there is nothing to download.
Used for
Pick one to see how it fits.
Businesses reviewing signups or leads
Spot-check suspicious entries before following up or granting access.
Try it freeCommunity and forum moderators
Flag likely throwaway accounts used to bypass one-time registration limits.
Try it freeAnyone who received an email from an unfamiliar domain
Get a quick signal on whether it's likely a short-lived throwaway address.
Try it freeHow it compares
A plain look at this tool next to the usual alternative.
| This utility | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
| Where it runs | In your browser tab | On your computer |
Questions people ask
What counts as a disposable email?
An address from a service designed to receive mail temporarily and then expire or become inaccessible, often used to avoid giving out a real address for a one-time signup.
How complete is the domain list?
It covers many well-known, widely used disposable and temp-mail services, plus a pattern check for likely variants, but no list can ever be 100% complete since new services launch constantly.
Is this the same as verifying an email actually exists?
No — this only checks whether the domain is a known throwaway service; it doesn't check whether the specific mailbox exists or is currently active.
Is this related to the site's own Temp Mail tool?
Yes, conceptually it's the reverse: Temp Mail generates a disposable address for you to receive mail; this tool checks whether an address someone gave you is from one of those kinds of services.
Is the email I check sent anywhere?
No, the check runs locally against the domain list in your browser.
More free tools
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Try the Disposable Email Checker now
Check whether an email address is from a known throwaway/temp-mail domain before you rely. Free to use.
Try it free