About RocketVerifier
Every email should reach a real inbox
RocketVerifier is an email verification platform. We tell you, before you send, whether an address will receive your message, and we show you the evidence behind every answer.
Our mission
Make every send count, for every sender
Bad addresses cost more than a bounce. They damage sender reputation, push good mail into spam and waste the budget behind every campaign.
We built RocketVerifier so that any team, from a solo founder to a large marketing department, can check every address with the same rigour, understand every result and pay a fair price for it.
What we build
One verification engine, everywhere email enters your business
Clean an existing list, check addresses inside your product or stop bad ones at the form. Every product runs on the same engine and draws from one balance of credits.
-
Bulk email verification
Upload a list of up to 100,000 emails and download only the addresses that are safe to send, with a health grade for the whole list.
Learn more -
Real-time verification API
Verify addresses inside your product with one REST call, official SDKs for Node.js and Python, and signed webhooks.
Learn more -
RocketShield
Stop disposable, mistyped and undeliverable addresses at your signup and lead forms with one script tag.
Learn more -
MCP server
Verify lists, check domains and clean CRM exports from Claude, ChatGPT, Cursor and other AI assistants.
Learn more -
Deliverability monitoring
Keep an eye on SPF, DKIM and DMARC for your sending domains and get alerted when something changes.
Learn more -
Integrations
Verify contacts inside HubSpot, Salesforce, Mailchimp, Klaviyo, Shopify and 30+ other tools.
Learn more
How we verify
7 checks, one clear answer
Every address runs through the same pipeline, ending in a live conversation with the mail server. No email is ever sent.
Explainable by design. Each result carries a status (deliverable, risky, undeliverable or unknown), a precise sub-status, a 0 to 100 score and the mail provider. You never have to guess why an address was flagged.
Unknowns are free. Some servers will not give a clear answer. When that happens we say so, return the result as unknown and do not charge you for it, instead of guessing.
-
Syntax
RFC-compliant format, typo detection and internationalised domains.
-
Domain and DNS
The domain exists and resolves.
-
MX records
The domain is set up to receive mail.
-
Disposable and role
Throwaway domains and shared inboxes such as info@ and sales@.
-
Catch-all analysis
Accept-all servers get a verdict: send safe, send with caution or avoid.
-
SMTP mailbox check
A live handshake confirms the mailbox exists, without sending an email.
-
Risk signals
Spam-trap patterns, toxic and do-not-mail addresses, and a 0 to 100 score.
What we stand for
The principles behind every result
-
Accuracy
Every address goes through the full pipeline, ending in a live mailbox check. That is how we deliver 99.5% accuracy.
-
Transparency
Every result comes with a status, a sub-status and a score, so you can see exactly why an address passed or failed.
-
Fair pricing
Every feature on every plan. Credits that never expire. Unknown results and duplicate addresses are never charged.
-
Privacy
We never email the addresses we verify. Lists are encrypted in transit and deleted on a schedule you control.
How we research and review our guides is set out in our editorial policy.
Clean your list before your next send
Verify your first emails in minutes. Credits never expire, and unknown results are always free.
100 free credits · No card required · Credits never expire