Export up to 250 leads from your CRM, drop the file below, and see exactly which ones are disposable addresses, dead mailboxes, typos or duplicates. No code, no account, about 60 seconds.
Your file needs a header row with an email column (e-mail, email address and work email also work). A phone column is checked too if you have one.
Up to 250 rows and 3 audits per day, free. Your file is screened in memory and the results shown above — we don't store your list.
Throwaway addresses from mailinator, temp-mail and thousands of similar services — the classic signature of a form filled to grab something free.
Domains with no working MX record can't receive email at all. Every message you send to them bounces, and bounces damage your sending reputation.
gmial.com, hotmial.com, yahooo.com — usually a genuine person who mistyped, and a lead you can still rescue if you spot it.
Keyboard-mash local parts like asdf89asdf@ that indicate a form filled purely to get past a gate.
Numbers that can't exist for the region they claim, checked offline against Google's libphonenumber data.
The same address appearing more than once in your file — double-counted in your reporting and double-worked by your sales team.
A row in a spreadsheet has no browser session and no visitor IP, so the audit runs our deterministic checks only. Our live protection adds behavioural bot detection, IP abuse reputation, device fingerprinting and AI analysis of the message text — which is why anything flagged here is genuinely junk, but a row that looks clean can still be caught in real time. Treat this number as the floor, not the ceiling.
No catch. Up to 250 rows, three audits a day, no account and no card — you see the full breakdown on screen. We're betting that when you see what's in your list, you'll want the annotated file and real-time protection, which is what the paid product does.
No. The file is screened in memory to produce the summary above and is not stored. Example addresses are partly masked on screen for the same reason. See our privacy policy.
A CSV with a header row containing an email column. Exports from HubSpot, Salesforce, Pipedrive, Mailchimp, Google Sheets and Excel all work — just choose "CSV" when saving.
Start a free trial — it cleans up to 1,000 rows per upload, or 5,000 on Enterprise, and returns the full annotated file. Still no card required.
That's the actual product. One script tag before </body> screens every submission in real time and blocks the fakes before they reach your CRM. Takes about 60 seconds — see the install guide.