Next, create a shared mailbox to check mail caught by the catch-all. You must change every domain you want to work with the catch-all email to Internal Relay. Required: If you have multiple domains in your Microsoft email plan, they're listed on the Accepted domains page. Please keep in mind that Microsoft doesn't support catch-all email and we recommend using one of the options above instead. If your business needs catch-all email, an admin can create a similar experience where mail sent to any of your account's domains goes to a single mailbox. Or, create an experience that simulates a catch-all email: For example, you can set up the shared mailbox so employees who have access can receive and respond to its messages. Shared mailbox: Give a group of people the ability to read and send messages from a common email address.When you send mail to the distribution group, every member receives it. Distribution group: Instead of contacting individual recipients, send one email to a group of people, such as a department or team working on a project.For example, if your address is and you create the alias all mail that’s sent to either or automatically goes to Create an alias. Alias: Create an address that sends all your mail to another inbox of your choosing.Use any of the following as a safer alternative to a catch-all email: You can choose from several of Microsoft 365’s existing features as an alternative (we strongly recommend this option) or continue to the rest of the article to set up an experience that simulates a catch-all email. If you used a catch-all with Workspace Email, it’ll no longer work after you move to Microsoft 365.

To prevent the risk of phishing attacks and other security threats, Microsoft 365 doesn't allow or support catch-all email. It could result in the delivery of unwanted mail, including spam. Choose alternative to catch-all after moving to Microsoft 365Ī catch-all email is an account that collects messages addressed to a misspelled or a non-existent email address on your domain name.

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