Set up the Outlook app on iPhone or Android for Microsoft 365

Updated 27 September 2026For Microsoft 365

To read your Microsoft 365 work email on your phone, install Microsoft Outlook from the App Store or Google Play, open it, type your work email address and sign in. The app brings your email, calendar and contacts together.

Before you start

Have these ready before you open the app:

Your work email address and password. If the account is new, do your first sign-in in a browser first.
The Microsoft Authenticator app, if your company uses it to approve sign-ins. See set up Microsoft Authenticator.
Enough time to finish in one go. If your company protects phones, Microsoft says a pause of a few minutes during setup can mean starting again.

Add your work account

The steps are almost the same on iPhone and Android. The pictures below are from an Android phone.

Install Microsoft Outlook from the App Store (iPhone) or Google Play (Android), then open it. If Outlook already has another email account, tap your account picture at the top left, then the + button and Add an account.
If Outlook has already found your work account from another Microsoft app, tap Add Account. Otherwise type your work email address under Enter your email and tap Continue.
On Enter password, type your password and tap Sign in.
Complete the extra check. Approve the sign-in in the Authenticator app, or, on Enter code, type the 6-digit code from the app and tap Verify.
Outlook may show A new way to sign in, which says you can approve sign-ins for your work account from the Outlook app. Tap I Understand, or Learn about other options to close it. After this, a later sign-in on the same phone (for example in Teams) may ask you to open Outlook and enter the number shown. If you cannot, tap I can’t use my Outlook mobile app right now and pick another way, such as a code from Authenticator.
If a message says your organisation is protecting its data in this app, tap OK, let Outlook restart and set up a PIN.
If Outlook asks to enable notifications, tap Turn On so you know when new email arrives.

Your inbox appears after a short wait. Tap Calendar at the bottom to see your meetings.

On Android: the Outlook inbox of a Microsoft 365 work account, with Calendar highlighted at the bottom

Add your email signature

Outlook on your phone has its own signature. It does not use the signature you set in Outlook on the web or on your computer, and it starts as “Get Outlook for Android” (or iOS).

Tap your account picture at the top left, then the gear icon at the bottom left to open Settings.
Tap Signatures.
Delete the text that is there and type your signature, for example your name and company.
Tap the tick at the top right to save.

The signature is used for every account in the app. To give each account its own signature, turn on Per Account Signature first.

Remove your work account

Remove the account before you give away or reset your phone, or when you leave the company. Your email stays in Microsoft 365; only the copy on the phone is deleted.

Tap your account picture at the top left, then the gear icon to open Settings.
Tap Accounts, then your work account. Outlook shows it as Microsoft 365 with your email address under it.
Scroll to the bottom and tap Remove account.
On Remove account?, tap Remove.

If your company protects phones

Some companies use Microsoft Intune to keep work data safe on phones. If yours does, Outlook may ask you to install the Intune Company Portal app. On Android, Microsoft says Company Portal is needed for the protection to work, even if you do not enrol the whole phone. Follow the prompts, then come back to Outlook. Your admin can tell you whether this applies to you.

Business Basic and tablets

Microsoft says Business Basic users can use the Outlook app on phones and tablets with screens of 10.1 inches or smaller. On larger tablets, use Outlook on the web.

Still stuck

WhatsApp our support team at +60 16-916 3324.

Common issues

Outlook says my organisation is now protecting its data in this app.

Your company protects work data on phones. Tap OK, let the app restart and set a PIN if asked. On Android you may also need to install the Intune Company Portal app, even though you do not have to enrol your whole phone.

New emails arrive late on my Android phone.

Battery saving can stop Outlook checking for email in the background. In your phone's Settings, find battery optimisation and set Outlook, Authenticator and Company Portal to not optimised. The menu names vary by phone brand.

Can I use the phone's built-in Mail app instead?

Usually yes, but Microsoft recommends the Outlook app, and some companies only allow Outlook on phones. Ask your admin before setting up another mail app.

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