Download and Open the App: If you haven’t already, download the Microsoft Outlook app from the App Store and open it.

To start Adding an Account: For First-time User: Tap Get Started.

For Existing User: Tap your profile picture (or the Outlook icon) in the top-left corner, tap the Settings gear icon (bottom-left), and then tap Add Mail Account under the Mail Accounts section.

Enter your full Microsoft 365 or Exchange business email address, then tap Add Account or Continue.

Outlook should attempt to detect that it’s a Microsoft 365/Exchange account.

If prompted, confirm that you want to set up an Exchange or Office 365 account.

You will be redirected to the Microsoft sign-in page.Enter the password associated with your email account.

Tap Sign In.

If your account uses Multi-Factor Authentication , follow the prompts from the Microsoft Authenticator app or other MFA method to verify your identity.

If prompted, tap Yes or Accept to grant Outlook permission to access your email, calendar, and contacts.If prompted to add another account, you can select Maybe Later to proceed to your newly added Inbox.

Your Microsoft 365 Exchange email, calendar, and contacts should begin to synchronize with the Outlook app.