What is a Catch-All Email?
A catch-all (also known as “accept-all”) is a domain setting where the mail server accepts all emails sent to any address at that domain—even if the specific email address doesn’t exist.
This means it's unverifiable: there’s no reliable way to know if the email address is actually valid or will be read.
Why Do Domains Use Catch-All?
Small businesses use it to avoid missing emails due to typos.
Large organizations (e.g. government, healthcare, education) may use it for flexibility and security.
Some use it to filter out spam by accepting and reviewing all incoming emails.
Should You Send Emails to Catch-All Addresses?
✅ Safe to send
If you're using your own email server with a dedicated IP and have a healthy list, sending to catch-all addresses might be safe.
❌ Not safe to send
If you're using a third-party email provider (like Mailchimp, SendGrid, etc.) that enforces a bounce rate under 4%, do not send to catch-all addresses—they increase the risk of bounces.
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