To add another email account to a Microsoft 365/Outlook profile, use the account setup flow in the mail app being used. Below are two common options covered in the context.
- Add another account in classic Outlook on Windows
- Open the Outlook desktop app.
- Press Alt+F to open the Account Information page.
- Move to the Add Account button and activate it (click it, or press Tab until “Add Account button” is selected, then press Enter).
- Enter the email address for the new account and press Enter.
- When prompted, enter the password for that account and confirm.
- Outlook will complete the setup automatically. After a short time, the additional mailbox will appear in the folder list.
If multiple accounts are configured and one should be the default for sending, use the same Account Information page to set a default account.
- Add another account in Mail for Windows 10
- Open the Mail app on Windows 10.
- Open Settings (gear icon), then choose Manage accounts.
- Select Add account.
- Choose the account type (for example, Outlook.com, Microsoft 365, Exchange, Gmail, Yahoo! Mail, or Other account (POP/IMAP)).
- Enter the email address and password for the new account and complete the sign-in prompts.
- The new account will then appear in the account list and can be used alongside the existing Microsoft 365 email.
Mail and Outlook both support adding multiple Microsoft 365, Outlook.com, and third‑party accounts (Gmail, Yahoo, iCloud, POP/IMAP), so repeat these steps for each additional address that needs to be added.
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