Email Checker
Check every email in your list at once: validity, plus automatic detection of disposable and temporary email domains. Private, instant, and free.
How it works
Get started with email checker in a few simple steps.
Paste your list
Paste one email per line or a comma-separated list.
Click Check
The tool validates syntax and flags any address from a known disposable email provider.
Sort the results
Valid emails get a green check, disposable domains get a warning, invalid ones get a cross.
Why use this free tool
Everything you need, integrated in one workspace.
- Flags 60+ known disposable and temporary email domains
- Instant bulk validation of the whole list
- Protects your database from fake sign-ups
- Free forever, private, runs in your browser
Related tools
More free tools to power your email workflow.
Frequently asked questions
What is a disposable email address?
A disposable email address comes from a provider like Mailinator or 10MinuteMail. It works for a short time and is often used to bypass sign-up checks or avoid tracking.
Is the email checker free?
Yes, it is 100% free and runs entirely in your browser.
Why should I flag disposable emails?
Disposable addresses usually belong to low-quality leads. Flagging them keeps your list clean and your metrics honest.
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