200 free verifications on signup → including catch-all domains. No credit card required.
SMTP-Level Email Verification
Verify in seconds before every campaign. Catch invalid, disposable, and catch-all addresses with the same strict logic your deliverability team would use manually.
4 of 4 free verifications remaining today
Sign up free and get 200 verifications instantly. No credit card required.
Trusted by 500,000+ leading GTM teams of all sizes
98.7%
Accuracy Rate
2.1B+
Emails Verified
<3s
Avg. Verification
500K+
Users Worldwide
The Problem
Your list looks deliverable. ISPs know better. Each threat below is invisible to the naked eye — and each one costs you before a single campaign ships.
◉ Threat 01
THE REPUTATION KILLER
◉ Threat 02
THE GRAY ZONE
◉ Threat 03
THE GHOST BUDGET
How It Works
No config. No prep. Upload your list, the fox runs the engine, you get a verified file that’s actually ready to send.
Upload
CSV, Excel, API, or ESP sync. The fox accepts everything — no column mapping, no formatting, no prep.
Verify
Other tools shrug at catch-all domains. The fox runs an AI pass on every gray-zone address and returns an actual verdict.
Export
A single sorted CSV — Valid, Risky, Invalid labeled and ready. Push straight to your ESP. No ZIP files, no manual sorting.
Upload
Verify
Export
CSV, Excel, API, or ESP sync. The fox accepts everything — no column mapping, no formatting, no prep.
Other tools shrug at catch-all domains. The fox runs an AI pass on every gray-zone address and returns an actual verdict.
A single sorted CSV — Valid, Risky, Invalid labeled and ready. Push straight to your ESP. No ZIP files, no manual sorting.
The Engine
Most tools run 3–4 checks and call it done. We run 9 — including the AI catch-all resolution that 92% of competitors skip entirely.
How many checks competitors run
We catch every typo, missing @, and broken format before a single network call goes out.
We confirm the domain is live and resolving — not just syntactically plausible.
We verify the domain has mail exchange records configured and accepting connections.
We knock on the mail server and ask: does this exact mailbox exist right now?
The industry stops here
We found 5 more
We flag throwaway addresses across 10,000+ known temporary email providers. They look real. They're not.
The part every other tool skips. We run AI analysis on catch-all domains and return a real verdict — not a shrug.
We identify generic inboxes — info@, admin@, support@ — that drag down engagement without ever converting.
We cross-reference 30+ real-time blacklists and honeypot databases before your domain touches one.
Every address gets a 0–100 machine learning score. Not a label. A number you can act on.
The Verdict
Three things we do that 92% of competitors skip. Side by side. No fluff.
Most tools see a catch-all domain and return 'unknown'. We run an AI second pass and return an actual verdict.
Every address gets a 0–100 confidence score from our machine learning model. Not a binary label — a number you can act on.
Your export has zero 'unknown' results. Every address is Valid, Risky, or Invalid — with a reason. The decision is yours, not a coin flip.
Social Proof
Sub-50ms APIAPI response is insane. Sub-50ms on average. We migrated from our old provider in an afternoon and haven't looked back.
18% → 0.8%Our bounce rate went from 18% to 0.8%. Our ESP literally asked what we changed. It was VeriFox.
4,200 caughtWe were hemorrhaging deliverability. VeriFox caught 4,200 bad emails in our 30K list on the first run. Paid for itself in a day.
Who It's For
Protect sender reputation and maximize deliverability. Clean lists before every campaign send — and track exactly what the fox removed.
Campaign ROI ↑Stop wasting outreach on dead addresses. Verify prospects before they hit your CRM sequences. Fewer bounces, more replies.
Reply rate ↑Sub-50ms real-time API. Validate at signup, block disposables, keep your database clean from the first keystroke.
50ms avg APIBulk verify client lists at scale. Export clean CSVs with confidence scores. White-label and bill per verification.
White-label readyFAQ
Simple Pricing
No subscriptions. No expiry. Pay once, verify whenever. Start with 200 free credits on signup.
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5,000 free verifications on signup. No credit card. No contract. The Fox is already waiting.
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