the free checker

CHECK ANY ADDRESSduck

Paste up to 10 addresses (one per line) and get the same verdicts our full clean produces. No account needed.

No signup·Nothing stored·Same engine as the full clean
Step 1 · paste {{countNote}}
Step 2 · verdicts duck

Each address gets a call (cleared, caution or do not send) with a score and the reason. Like this:

CLEARED jane@company.com 10/10
CAUTION sarah@gmial.com 4/10
DO NOT SEND x9@tempmail.com 1/10
paste some addresses to try it →
scrubbing…
Step 2 · verdicts scrubbed ✓
{{r.label}}
{{r.email}}
{{r.note}}
{{r.score}}
Got a whole list like this? Clean it, start free
got a whole list?

FREE LIST EVALUATIONduck

Upload your full list and we'll evaluate it end to end, then tell you straight whether it needs cleaning or not. The evaluation costs nothing; you only ever pay if you choose to clean.

Evaluate my list free
spring-newsletter.csv 77,103 addresses
Cleaning recommendation
NOT REQUIRED ✓

Your list is in good shape: under 2% risky addresses. Come back after your next big signup push.

FREE EVALUATION

Spot-check 10 here, or evaluate a whole list free. Pay only if you clean.

NOTHING STORED

Checked addresses are discarded the moment your verdicts render.

THE REAL ENGINE

Same checks as a paid clean: syntax, domain, mailbox, risk.