A catch-all email address is an address on a domain configured to accept messages sent to addresses that may not correspond to individual mailboxes. Instead of rejecting an address that cannot be identified, the domain's mail server accepts the message.
How Does Catch-All Email Work?
Normally, a receiving mail server can reject a message when the recipient address does not exist. With a catch-all configuration, the server accepts messages sent to addresses on the domain, even when it cannot confirm whether a specific mailbox exists.
For example, if example.com uses a catch-all configuration, the server may accept
messages sent to john@example.com even if John's individual mailbox cannot be confirmed.
Why Do Domains Use Catch-All Email?
Organizations may use catch-all configurations to ensure that messages sent to their domain are not immediately rejected because of an incorrect or unknown address. The configuration can also allow a company to route messages sent to unrecognized addresses to a designated mailbox for review.
Can You Use a Catch-All Email Address?
Yes, a catch-all email address can receive messages, but its individual mailbox cannot be confirmed through standard email verification . This means the address may accept email even when the specific recipient cannot be confirmed. For this reason, catch-all addresses are generally treated as unconfirmed rather than confirmed deliverable addresses.