Disposable Email Checker
Temporary inboxes fake your signups, abuse your trials and bounce your campaigns. Check an address below and see instantly whether it is disposable.
Check an address now — free
Free on this page: 15 checks a day, no account needed. Signed-in accounts verify with credits — and unknown results are never charged.
What is a disposable email address?
Disposable — or temporary — email addresses are throwaway inboxes created in seconds to get past a signup form, grab a free trial or download a lead magnet, then abandoned forever. Services hand them out by the thousand, and they are a quiet disaster for anyone who collects email addresses.
Fake signups
Disposable addresses power throwaway accounts, bonus abuse and bot registrations that never become customers.
Dead weight on your list
They expire within hours or days, so every campaign you send to them bounces — and bounces damage your sender reputation.
Wasted spend
CRMs and sending platforms charge by contact count. Temporary addresses inflate your bills for people who do not exist.
How TrueSendy catches them
TrueSendy checks every address against a constantly maintained database of disposable providers, then goes further: the address runs the same full verification as any other — syntax, MX and provider detection, catch-all probing and a live SMTP handshake. An address can look perfectly valid and still be flagged disposable, which is exactly why a domain check alone is not enough.
- Known temporary-mail domains flagged instantly, before the network checks
- Full six-check verification on every address, disposable or not
- Results exported as their own segment, so you can block at signup or clean in bulk
- Use the API to reject disposable addresses the moment a form is submitted
Simple, honest pricing
1 verification = 1 credit, credits never expire, and you are never charged for unknown results or for duplicate rows inside a bulk file.
Need a steady volume? Monthly plans run from $29/month for 25,000 credits. Or use the pricing calculator on the homepage to buy the exact number of credits you need.
Frequently asked questions
Is a disposable email address the same as an invalid one?
No. A disposable address usually exists and would accept mail today — it is flagged because it is temporary and worthless within days. Invalid means the mailbox does not exist at all.
Should I block disposable addresses at signup?
For free trials, downloads and account creation, yes — that is where they do the most damage. For a newsletter, many teams accept them but segment them out of important sends.
Can this checker detect every disposable provider?
No tool can promise 100% — new throwaway domains appear daily. TrueSendy combines a maintained provider database with live verification, which catches both listed domains and addresses that fail real mailbox checks.
How many addresses can I check for free?
15 a day on this page with no account, or 100 free credits when you create an account — enough to clean a first list and test the API.
Start cleaning your list today
Create your free account in under a minute. 100 verification credits are on us — no card required.
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