Email
Verification
Stop burning your sender reputation. Verify your leads through 4 validation layers — syntax, MX/DNS, DMARC, and a live SMTP probe — with catch-all detection built in.
Validation Queue
Live Stream
Flags risky and undeliverable addresses before you send.
Bounce Reduction Protocol
Simple syntax checks aren't enough. We run 4-layer validation (syntax · MX/DNS · DMARC · live SMTP probe) to help every email reach the inbox.
SMTP Handshake
We ping the recipient mail server directly to confirm the mailbox exists without ever sending an email.
MX Record Audit
Full DNS analysis to ensure the domain is configured to receive mail and isn't on blacklists.
DMARC Policy Check
Inspects the domain's DMARC record to gauge authentication posture before you send. Disposable-provider detection is coming soon.
Catch-all Scoring
Advanced logic to identify servers that accept all mail, helping you decide whether to risk a send.
Syntax Engine
Cleaning typos and ensuring RFC compliance across global email standards.
Domain Health
Checking if the domain is active, parked, or expiring to prevent sends to dead leads.
Bulk List Cleaning
Upload your CSV or Excel files and watch as GrowZen cleanses 10,000+ leads in minutes. We provide a detailed report with bounce probability for every single contact.
Scale without the
Bounce Penalty
Gmail and Outlook track your bounce rates. Exceed 2% and your deliverability will plummet. GrowZen Verifier acts as a gatekeeper, ensuring your outreach is always high-quality and safe.
GrowZen's verifier runs 4 layers on every address — syntax repair, MX/DNS, DMARC, and a live SMTP probe — plus catch-all detection, so you can filter risky and undeliverable leads out before they ever hit your sender reputation.