Already have a list? An export from a static contact database, a CRM pull, a list bought or built months ago: it was accurate when it was collected, not now. Re-verify every address through the checks Lakewave runs before each send, get your CSV back with a verdict and rating per row, and pay only for definitive answers.
Static databases are collected, not checked: a record is as old as the last time somebody looked. People change jobs, domains change hands, mail servers change their answers. A list that was clean when it was exported is not clean by the time it is sequenced. The teams getting into the inbox in 2026 verify at enrollment, every time, not once a quarter.
List Clean is built for that moment. Upload the list you are about to use, get verdicts in minutes, and send only to what resolved.
Any CSV with an email column, or addresses one per line. Up to 5,000 rows per run. The address column is detected automatically.
Anything Lakewave already knows about an address is answered at no charge. Most lists resolve a large share here.
Each remaining address is verified live. Accept-all domains are resolved instead of being written off as risky.
Your CSV with verdict, reason, stars and source added, or the valid rows only. Invalid verdicts update matching contacts in your account so they are never sent to again.
The same verification Lakewave runs right before every send. Each address comes back valid, invalid, accept-all, unknown, dead domain or bad syntax, with a 1 to 5 star rating.
1 credit per address that comes back definitive, valid or invalid. Accept-all, unknown, dead-domain and bad-syntax rows cost nothing, and addresses Lakewave verified recently are answered from memory for free. A run is capped at your credit balance, so a large upload can never run you negative.
Any CSV with an email column, or addresses pasted one per line. Other columns come back untouched, with four Lakewave columns added: verdict, reason, stars and source. Up to 5,000 rows per run.
For a 100,000-row hygiene pass, a bulk verifier is cheaper per row and that is the right tool. List Clean is for the list you are about to sequence this week: it resolves accept-all domains instead of flagging them, updates matching contacts in your Lakewave account so invalid addresses are never sent to again, and the valid rows flow straight into Outreach, Surge or a Campaign.
No. Verification talks to mail servers, never to recipients.
15 verified contacts free. No credit card. No sales call required.
Create free account →