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Email Verifier.
Every verifier on page one of Google gates bulk checking behind a signup and 25–100 monthly credits — and makes you upload your lead list to their servers. This one runs entirely in your browser: unlimited volume, no account, and your list structurally cannot be retained, because it never leaves this tab.
YOUR LISTUNLIMITED · NO SIGNUP · NEVER UPLOADED
ONLY DOMAINS HIT DNS — FULL ADDRESSES NEVER LEAVE THIS TAB
WHAT THIS CHECKS — AND WHAT NOTHING IN A BROWSER CANNO 99% ACCURACY THEATER
✅Checked here, live: syntax, domain existence, real MX records (via DNS-over-HTTPS), Null-MX refusal, disposable domains, role accounts, personal-mailbox detection, typo correction, dedupe. This catches the dead domains, fakes, and typos that cause most hard bounces.
🔒Privacy, structurally: your list is processed in this tab. DNS lookups send only domains (acme.com), never addresses. We couldn't retain your list if we wanted to — compare that to uploading your entire pipeline to a verification vendor.
⚖️The honest gap: confirming a specific mailbox exists requires an SMTP conversation from a warmed server — impossible in a browser. Reality check: Gmail and Microsoft largely refuse those probes anyway, which is why paid tools return "catch-all/unknown" on a big share of addresses. Use this pass for hygiene at unlimited volume; let your sequencer's built-in verifier do the last-mile SMTP check on the survivors.
Why this matters: a hard-bounce rate above ~2% starts burning your sending domains — and an unverified list is how you get there. Clean here first, then check your copy in the spam word checker and size the whole operation with the cost & ROI calculator.