Pricing

from $0.50 / 1,000 email verifieds

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Bulk Email Validator & Catch-All Verifier ($0.50/1k Emails)

Try for free

High-speed Bulk Email Verifier & B2B Deliverability Validator API ($0.50/1,000 emails) for Smartlead, Instantly, Clay, and n8n. Verifies syntax, live DNS MX servers, SPF/DMARC security, email gateway provider (Google Workspace vs M365), disposable/burner domains, and role accounts.

Pricing

from $0.50 / 1,000 email verifieds

Rating

0.0

(0)

Developer

Štefan Bohumel

Actor stats

Bookmarked

Total users

Monthly active users

4 days ago

Last modified

Bulk Email Validator & Catch-All Verifier API ($0.50 / 1,000 Emails)

Verify thousands of B2B and consumer email addresses per minute for Smartlead, Instantly, Clay.com, n8n, Make, and MCP AI Agents at just $0.50 per 1,000 emails — 2× to 10× cheaper than ZeroBounce, NeverBounce, and BounceVerify, running 100% browserless in 256 MB RAM.

What It Checks Per Email Address

RFC 5322 Syntax & Plus-Alias Normalization: Strips invalid characters and normalizes + aliases into normalizedEmail.
Live DNS MX Mail Server Verification: Queries Cloudflare DNS-over-HTTPS (DoH) in sub-20ms with domain-level caching to confirm active mail exchangers (hasMxRecords, mxRecords).
Email Gateway & Catch-All Security Fingerprinting (emailProvider, isSecurityGateway): Identifies Google Workspace, Microsoft 365 (Exchange Online), Proofpoint Enterprise Gateway, Mimecast Security Gateway, Barracuda, ProtonMail Business, Zoho Mail, Cloudflare Email Routing, and custom SMTP servers.
SPF & DMARC Domain Authenticity (hasSpf, hasDmarc, dmarcPolicy): Detects whether a corporate domain has active email authentication (reject / quarantine / none) vs parked or unconfigured domains.
Disposable / Burner & Role Inbox Detection: Flags 400+ disposable temp-mail providers (mailinator.com, yopmail.com, 10minutemail.com, guerrillamail.com, etc.), generic shared role accounts (info@, support@, sales@, admin@), and consumer free-mail domains (gmail.com, outlook.com, yahoo.com).

Input Example

{
  "emails": [
    "press@shopify.com",
    "founders@linear.app",
    "support@alza.cz",
    "fake@mailinator.com"
  ],
  "checkSpfDmarc": true,
  "rejectRoleAccounts": true,
  "includeMcpMarkdown": true
}

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