Set up an Outlook account on the iOS Mail app
support.microsoft.com › en-us › officeSet up a Microsoft 365, Exchange, or Outlook.com email in the iOS Mail app Go to your iPhone or iPad's Settings > scroll down and tap Accounts & Passwords > Add Account. Note: If you're on iOS 10, go to Mail > Accounts > Add Account. Select Exchange. Enter your Microsoft 365, Exchange, or Outlook.com email address and a description of your account.
Microsoft Outlook on the App Store
apps.apple.com › us › appOutlook for iOS works with Microsoft Exchange, Office 365, Outlook.com (including Hotmail and MSN), Gmail, Yahoo Mail, and iCloud. -- To make an in-app purchase of a Microsoft 365 Family or Personal subscription, open the app, go to Settings, and tap on Upgrade next to your Outlook.com or Hotmail.com account.