- Open 
 Settings. - Tap Mail, and then Accounts. Depending on your iOS version, you might need to tap Passwords & Accounts.

 - Tap Add Account.

 - Tap Microsoft Exchange.

 - Enter your email address and a short description (like your company’s name or email type), and then tap Next.

 - To confirm you want to use your Microsoft Exchange account, tap Sign In.

 - Enter your email password, and then tap Sign In. You might need to select your account type as Work or school, not Personal, to continue.

 - If your admin enabled multi-factor authentication (MFA), verify your account or set up the Authenticator app.
 - (Optional) If Microsoft can’t find your account, you might be asked to enter your details manually:
- Email: Your Microsoft 365 email address
 - Password: Your Microsoft 365 email password
 - Server: outlook.office365.com (this is required)
 - Domain: This can be left empty
 - Username: Your Microsoft 365 email address
 
 - Tap Next. You might be asked to select Consent on behalf of your organization, which allows Microsoft 365 and the Mail app to work together. Tap Accept.
 - Tap Save. You can come back and update settings here at any point.

 
That’s it! You’ll see your Microsoft 365 account under Accounts.