Verify emails automatically when contacts enter your CRM, sign up to your form, or appear in a spreadsheet. No code.
Connect on Zapier →Paste a list → verify → get clean output in the same sheet
Verify contact email at creation, tag invalid ones automatically
Enrich leads with deliverability score before routing to reps
Verify new subscribers before they hit your audience
Block disposable emails at form submission
Get notified when a high-value domain fails verification
Need the REST API instead? Read the docs →
Start free trialWith Zapier and Make (Integromat), you can insert KaijuVerifier’s 7-Layer Smart SMTP verification step between more than 6,000 web applications — including Typeform, Calendly, Facebook Lead Ads, LinkedIn Lead Gen Forms, Stripe, Airtable, Google Sheets, and Slack — without writing backend server code.
In a typical 3-step Zap, Step 1 triggers when a new lead arrives (e.g., from Typeform or Facebook Lead Ads); Step 2 sends the email to KaijuVerifier’s /api/v1/verify-single endpoint; and Step 3 uses a Zapier Filter or Path rule so only leads with status = valid (or score >= 75) are pushed into HubSpot, ActiveCampaign, or your sales team’s Slack channel.
| Zapier / Make Automation Step | Payload / Filter Logic | Downstream CRM & ESP Benefit |
|---|---|---|
| Step 1: Lead Capture Trigger | Typeform, Calendly, Meta Lead Ads, Tally, Webflow | Captures raw prospect email + UTM metadata in real time |
| Step 2: KaijuVerifier Action | POST /api/v1/verify-single (180ms JSON response) | Returns status, score (0–100), suggestion, is_disposable & is_catch_all |
| Step 3: Conditional Router / Filter | Allow if status == "valid" AND is_disposable == false | Keeps 100% of junk, burner & hard-bounce leads out of your paid ESP |
Create a Zap triggered by a new lead in Typeform, HubSpot, Facebook Lead Ads, or Calendly, add the KaijuVerifier "Verify Email" action (or Webhooks by Zapier POST to /api/v1/verify-single), and filter out status != valid before syncing to your ESP.
No. Syntax errors and duplicate checks within the same caching window cost 0 credits, and unknown/greylisted SMTP deferrals are 100% free.