Built for cold email agencies and RevOps teams running Smartlead.ai: scrub scraped B2B lists, isolate corporate catch-alls, and protect client sender domains at $19 per 10k ($49 per 50k).
Smartlead.ai
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Target Field: email (Smartlead Campaign CSV)
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Compliance Guard: Smartlead Auto-Pause Bounce Threshold (<1.5%)
Instant client-side pre-scan (0 credits) + live 5-email Smart SMTP sample check before you even sign up.
On average, 16% of unverified CRM/ESP lists consist of invalid, deactivated, disposable, or duplicate contacts that you pay to store every single month. Slide your list size below:
Drop your CSV or Multi-Sheet Excel (.xlsx) workbook from Clay, Apollo, or LinkedIn Sales Navigator into KaijuVerifier.
We strip invalid mailboxes, 1M+ disposable domains, syntax typos, and high-complaint role addresses (abuse@, legal@, compliance@).
Import the verified CSV into Smartlead.ai knowing your rotating mailboxes won’t get auto-paused or blacklisted by high bounce rates.
Automate lead verification in Clay, n8n, or Make via POST /api/v1/verify right before triggering the Smartlead "Add Lead to Campaign" action.
curl -X POST https://kaijuverifier.com/api/v1/verify \
-H "Authorization: Bearer kv_live_your_api_key" \
-H "Content-Type: application/json" \
-d '{"email": "{{email (Smartlead Campaign CSV)}}"}'Replacing burned secondary domains and re-warming mailboxes takes 2–3 weeks. Verifying every lead list with KaijuVerifier removes dead B2B mailboxes and flags catch-all servers before Smartlead sends a single email.
Yes. KaijuVerifier natively supports Multi-Sheet Excel (.xlsx) workbooks and exports clean CSV or .XLSX files ready for Smartlead import.