Verify the unverifiable.
Stop guessing on the 30–60% of B2B domains that other tools mark "risky." We score catch-alls with a stacked engine — so you can actually send.
500 free verifications / month · no credit card
- Catch-all domain
- yes — deep-verified
- MX provider
- Google Workspace
- Pattern match
- firstname.lastname ✓
Catch-all deep verify
SMTP timing fingerprint, username pattern probing, public-source cross-reference, and an ML scorer — a 0–100 confidence where every other tool just says “risky.”
Bulk · API · widget
Drop a CSV, call the REST API, or paste a one-line widget onto your signup form. One engine, three surfaces, the same verdict.
40% under market
$19 for 10k, $99 for 100k, $799 for 1M. Pay-as-you-go credit packs too. No annual lock-in, 500 free every month.
How it works
Send an email
Single address, a CSV, or an API call.
We deep-verify
Syntax → MX → SMTP → catch-all ML scoring.
Act on a verdict
valid · invalid · risky · unknown, with a score.
Drops into your stack
HubSpot auto-verifies new contacts and writes the verdict back as a property. Or wire the REST API in minutes — every key is origin-scoped.
Read the docscurl -X POST https://api/v1/verify \ -H "Authorization: Bearer vk_…" \ -d '{"email":"jordan@acme.com"}'
Verify your first 500 free
No credit card. Upgrade only when you outgrow the free tier.
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