Verification
Accept-All Domain
See Catch-All Domain. A mail server configured to accept emails sent to any address at that domain.
Definition
An accept-all domain (also known as catch-all domain) is configured to accept emails sent to any address at that domain, regardless of whether the specific mailbox exists. This makes traditional SMTP verification impossible because the server responds positively to all addresses. While catch-all configuration can be legitimate (small businesses wanting to capture all emails), it creates challenges for email verification and list hygiene.
Pro Tip
Kawaa uses AI-powered analysis to provide confidence scores for addresses on catch-all domains, helping you make informed decisions.