4-bucket deliverability intelligence for cold email agencies. Not just valid/invalid — SAFE, PROTECTED, RISKY, DEAD.
1 credit per address. Credits never expire. No inbox access required.
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Cleaner
Lists before launch
Separate safe, risky, and dead emails
Lower
Bounce risk
Catch bad addresses before sending
Protect
Sending domains
Avoid burning warmed-up inboxes
1 credit
Per address
Credits never expire
They're failing because they never reach the inbox. Most cold email campaigns lose 20–30% of potential replies to deliverability problems — before a single prospect reads your subject line.
Every hard bounce signals to ISPs that your sending domain can't be trusted. It doesn't recover — it gets blacklisted.
Your email shows 'Sent'. Your prospect never saw it. Spam filters kill campaigns silently — no bounce, no trace.
A single dirty campaign can blacklist your sending domain permanently — and no amount of warming recovers a burned domain.
No guesswork. No waiting. Just clear intelligence before you send.
Drop your CSV into Campaign Scan. Any size, any format.
SMTP probe where the provider allows it, plus MX, SPF and DMARC checks.
See your bounce estimate and domain health before sending.
Clean list and risky list separated. One click download.
Launch knowing your domain is protected and your list is clean.
Every email check runs MX, SPF and DMARC checks automatically. No extra steps.
SPF, DMARC and MX — scored per domain. Know which domains in your list are sending into spam before you send.
Full SMTP handshake — EHLO, MAIL FROM, RCPT TO — against the real mail server, wherever the provider allows it.
Role addresses, free providers and a short list of well-known disposable domains flagged automatically. Filter for B2B quality.
Paste your subject and body — get a spam trigger score before you hit send.
Checks are paced per email domain to avoid triggering mail-server defences.
If your revenue depends on cold email, VerifyFlow protects it.
Protect client domains, deliver campaign health reports, and charge a premium for deliverability intelligence.
Verify prospect lists before outbound sequences. Stop burning your sending domain on bad data.
Qualify leads at the email level before handing to sales. Higher quality pipeline, fewer wasted calls.
Running Instantly, Smartlead, or Lemlist? Clean your list first. More emails reaching inbox = more pipeline.
Real SMTP checks where the provider allows them. Where they don't (for example Microsoft 365 and Yahoo), the address is marked PROTECTED instead of guessed.
| Provider | 1k | 10k | 50k | Credits / $1 | 4-bucket? |
|---|---|---|---|---|---|
| ZeroBounce | $9 | $90 | $274 | 111 | ✗ |
| NeverBounce | $8 | $80 | $200 | 125 | ✗ |
| Kickbox | $8 | $80 | $350 | 125 | ✗ |
| Emailable | $5 | $50 | $175 | 200 | ✗ |
| VerifyFlow | $9.99 (2.5k) | $99.99 (30k) | $199 (75k) | 250 | ✓ |
Every address we process uses 1 credit, whatever the result (Safe, Protected, Risky or Dead).
Pay As You Go
$9.99 / 2.5k credits
No subscription. Buy when you need.
Growth
$99.99 ONE-TIME
30,000 credits — one-time purchase
Pro
$199 ONE-TIME
75,000 credits — one-time purchase
All verified results consume 1 credit · Credits never expire
We never ask for your email password or account access.
Enterprise-grade WAF + rate limiting on all endpoints.
We never sell your email lists.
Everything you need to know before you start.
Run a free check in 60 seconds — before your next campaign burns your domain.
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