What is an “unknown” result and how should it be handled?
Unknown results occur when validation cannot confirm mailbox existence. This usually happens with catch all domains, corporate servers, or privacy protected configurations. Unknown addresses should be categorized as to monitor until engagement confirms safety.
Need personalized help?
Get a personalized explanation for your specific email setup. Open an AI assistant with your question pre-loaded — just add your details and send.
Was this answer helpful?
Thanks for your feedback!