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Verifying more than 1 million emails a month.

How it works

Drop a CSV here, or paste your emails

q4-agency-leads.csv4,820 rows

[email protected]
[email protected]
[email protected]
[email protected]
…

Verify list

Upload a CSV, paste a list, or send addresses from your own tools. Your other columns stay untouched.

Checking your list2,990 of 4,820 done

Thousands of addresses are checked in minutes. Watch the results arrive, or close the tab and come back.

Deliverable, risky, undeliverable or unknown, with the reason beside it, so you know exactly what to keep.

76%Deliverable

612 dead addresses removed. Unknowns refunded.Download clean list

Get a CSV with a verdict on every row, or only the addresses that are safe to send to.

Instantly

Smartlead

HubSpot

Mailchimp

Apollo

Zapier

Google Sheets

Make

POST /api/v1/verifyor connect Claude, ChatGPT and Cursor with our MCP server

Import the good addresses into your sending tool, or let your tools call us automatically. Bounces drop and your domain stays healthy.

Try it on your own list. 25 checks free for 3 days.Start your free trial →