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Deliverability Letter

Catch-All

Also known as: Accept-all

A catch-all is a server configuration that accepts emails sent to any address at a domain, even if the specific mailbox doesn't exist.

A catch-all setup ensures that no email is lost due to typos. If you email randomtypo@bento.com and the domain is set to catch-all, the server will accept the message instead of bouncing it.

While useful for businesses to capture leads, catch-all domains are a headache for email marketers. Because the server accepts everything initially, it's impossible to verify if an address is real during list cleaning. Later, the server might silently delete the message or send a delayed bounce.

High numbers of catch-all addresses on your list can lower your engagement rates and mask hygiene problems until it's too late.