A professional address found from public or properly sourced information.
Validated with appropriate verification tools and given an honest status.
The mailbox accepted verification checks.
Use it: Safe for outreach.
The domain accepts all mail, so the individual mailbox can’t be confirmed.
Use it: Send in smaller batches and monitor.
The mail server didn’t give a definitive answer.
Use it: Treat as lower priority.
The address failed verification.
Use it: Excluded or replaced — never sent as valid.
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