A former freelance contributor who has reviewed hundreds of email programs and services since 1997.

When you create a new message in Outlook, the email address you used to sign in to Outlook appears in the From field.

If you have multiple email accounts and want to use an email address that is not associated with the account you opened in Outlook, edit the From field of the message and enter any email address you want, even an email address from a closed account.

To use any email address in the From field of a message you are composing in Outlook, follow the instructions for your version of Outlook.

In the From text box, type the email address which you want to appear in the From field.

Note that freely editing the From field is allowed in the email standards.

Depending on the outgoing ( SMTP ) email server used for the default Outlook email account and the address you use in the From field, a number of things can happen.

If an address is not configured for sending in Gmail, Gmail changes the address in the From field to the one used with the account you set up in Outlook.

The address used in the From field in Outlook is preserved in the X-Google-Original-From header line.

If you do run into message delivery problems with using a different From address in Outlook, you have two options.

Outlook For Mac Show From Field