What does catch-all mean?

A catch-all domain is configured to accept mail for any address on that domain, even when the specific mailbox may not exist in a normal way.

Why that matters

Catch-all domains reduce certainty. They are not the same as clearly valid addresses, and they should not be treated as a free pass.

Practical action

Most teams apply a separate policy for catch-all results:

• review before sending
• isolate into lower-risk segments
• combine with source quality before deciding

Read the deeper interpretation guide at Results and Statuses.

If you need help setting policy, open the support widget with your use case and risk tolerance.