Spot disposable emails instantly
Check if an email is temporary or fake before it hits your list. All processing happens in your browser.
Checking 479 known disposable providers
No signup • No data stored • Updated daily
Enter email address
We'll tell you instantly if it's from a disposable provider.
Result
Type an email address to check it
Search domains
Search 479 disposable domains. Type at least 2 characters.
Matching domains
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Paste email addresses
Results
Paste emails above, then click Check Emails
Want to verify these emails actually work?
Disposable detection is just the start. Verify SMTP, check MX records, catch typos.
How it works
Three ways to check. All processed in your browser.
Enter your emails
One email, search for a domain, or paste a whole list. We'll handle the rest.
We check instantly
Your emails are matched against 479 known disposable providers.
Get clear results
You'll see which emails are disposable and which look legitimate.
What is a disposable email address?
A disposable email address is a temporary inbox that works for a few minutes, then deletes itself. People also call these temp mail, throwaway, or burner addresses.
Someone grabs one to get past a signup form without handing over their real address. No password, no real inbox, no way to reach them later. Sites like 10minutemail and Guerrilla Mail hand them out by the thousands, which is why a disposable email checker matters when you collect addresses at scale.
How to spot one
The address itself looks normal. The domain behind it gives it away. A disposable provider runs thousands of throwaway domains, and that's what this tool matches against.
- • The inbox self-destructs after 10 minutes to 24 hours
- • No password or signup is ever needed
- • The domain shows up on public disposable lists
- • New throwaway domains appear every day
Why blocking them matters
Every disposable signup is dead weight on your list. It never opens, never buys, and it drags down the numbers your email provider watches.
- • Signup fraud: one person farms free trials and one-time discount codes with a fresh address each time
- • Bounce rates: the inbox is already gone by send time, and Gmail throttles senders who push past a 2% bounce rate
- • List hygiene: fake addresses inflate your subscriber count and the bill from your email platform
- • Spam complaints: Gmail flags senders above a 0.3% complaint rate, and junk signups have no reason to stay subscribed
Checking emails at scale?
This browser tool handles one list at a time. When you need to block disposable addresses at the moment of signup, MailCop runs the same check over an API and returns a verdict in the response.
Disposable detection is one layer. MailCop also checks syntax, MX records, and the live mailbox, so you catch typos and dead addresses that a blocklist alone misses. See the developer API or MailCop pricing for at-scale use.
From this tool to your stack
- 1 Block disposable signups in real time with a single API call
- 2 Upload a CSV to clean an existing list before your next send
- 3 Get the full verdict: disposable, role-based, catch-all, or deliverable
Disposable email checker FAQ
What is a disposable email address?
A disposable email address is a temporary inbox that works for a few minutes and then deletes itself. People also call it temp mail, throwaway, or burner email. They use it to pass a signup form without giving out their real address.
How do I check if an email is disposable?
Paste the address into the checker above. It matches the domain against 479 known disposable providers and tells you instantly whether it's temporary. You can check one email, search a domain, or paste a whole list.
How do I check a disposable email address in bulk?
Switch to the Check multiple tab, paste your list one address per line or comma-separated, then click Check Emails. Everything runs in your browser, so your list never leaves your device. For real-time checks at signup, MailCop runs the same check over an API.
Is this disposable email checker free?
Yes. There's no signup, no limit, and no data stored. Your emails are matched locally in your browser against an updated list of disposable domains.
Why should I block disposable email addresses?
Disposable signups never open or buy, and the inbox is gone by the time you send. That drives up bounces and complaints, which is what Gmail and Yahoo watch when they decide whether your mail reaches the inbox or the spam folder.
Can someone fake a disposable email to look real?
New throwaway domains appear every day, so no blocklist catches every one. That's why MailCop pairs disposable detection with syntax, MX, and live mailbox checks. A blocklist alone misses domains it hasn't seen yet.
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