Right-click any email address on any webpage. Get syntax, DNS, MX, and SMTP results in 2 seconds. Free forever.
Add to Chrome — FreeSelect any email on any page, right-click → Verify with Kaiju
Full 10-layer check: syntax, DNS, MX, SMTP, disposable
Small badge shows valid/invalid/risky without leaving the page
See how many checks you've used this month. Upgrade in-extension
Works without login for basic checks; add key for SMTP probing
LinkedIn, Gmail, CRMs, spreadsheets — any page with emails
Sales development representatives (SDRs), technical recruiters, and PR outreach specialists spend hours copying prospect email addresses from LinkedIn profiles, company "About Us" pages, GitHub repositories, and conference directories into separate verification tabs. The KaijuVerifier Chrome Extension brings our 7-Layer Smart SMTP engine directly into your browser.
Click the KaijuVerifier toolbar icon on any webpage to automatically extract, de-obfuscate, and deduplicate every email address present in the DOM at $0 cost, or highlight any single email address to view its live 0–100 deliverability score, MX gateway provider, disposable/role status, and RCPT TO mailbox verdict in under 300ms. Because the Chrome Extension communicates directly with our global TLS 1.3 edge API and executes DOM email extraction locally inside your browser sandbox, no browsing history or third-party webpage content is ever transmitted to external servers. SDRs and recruiters can verify individual executive mailboxes on the fly or batch-clean extracted prospect lists in seconds.
| Chrome Extension Feature | In-Browser Execution Mode | Productivity & Credit Advantage |
|---|---|---|
| Right-Click Single Email Verify | Context menu → /api/v1/verify-single over TLS 1.3 | Instant 0–100 score & MX badge without leaving your tab |
| Full-Page DOM Email Extractor | Local client-side regex + [at]/[dot] de-obfuscator | $0 Free · Extracts & deduplicates all emails on any webpage |
| 1-Click CSV Export or Batch Verify | Direct sync to your KaijuVerifier cloud workspace | Uses your 100 free/mo credits or non-expiring credit packs |
The Chrome Extension lets you highlight any email address on LinkedIn, company websites, GitHub, or Google Sheets, run a 1-click 7-Layer Smart SMTP check, or extract and deduplicate all emails visible on a webpage.
Yes. You authenticate once with your API key, giving you access to your 100 free monthly checks and any prepaid or subscription credits directly from your browser toolbar.