How It Works
Four-step email verification
Every email goes through a multi-layered verification pipeline in milliseconds.
Validate format
Check email syntax against RFC standards to catch typos and malformed addresses instantly.
Check domain & MX records
Verify the domain exists and has valid mail exchange records configured to accept email.
Detect disposable emails
Screen against 3,000+ known disposable and temporary email providers in real time.
Verify mailbox via SMTP
Ping the actual mailbox to confirm the address exists and can receive mail.
Technical Details
RFC 5322 Compliance
We validate email addresses against RFC 5322 standards, catching malformed addresses before they reach your database.
MX Record Resolution
DNS lookups verify that the domain has properly configured mail exchange records and can receive email.
Disposable Email Database
Our constantly updated database includes 3,000+ disposable and temporary email providers, plus domain age checking.
SMTP Handshake
We connect to the mail server and verify the mailbox exists without actually sending an email.
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