How to Add an Exchange Account to iPhone Mail

Adding an Exchange account to iPhone Mail takes about three minutes once you know what the setup screen is actually asking for. Most of the time iOS handles the heavy lifting: you enter your work email address, tap Next, and autodiscovery fetches the server settings without any manual input. When it fails — because the company runs on-premises Exchange rather than Microsoft 365, or the account requires a device-management profile before mail starts flowing — the fix is specific and quick.

This guide covers the steps for iOS 18 (the procedure has not changed since iOS 13), the differences between Microsoft 365 and on-premises Exchange setups, why choosing Microsoft Exchange in the account-type list matters more than it looks, and the management question most setup guides skip entirely: what control does your employer actually gain over your iPhone once the account is added? The answer depends on whether a Mobile Device Management profile is involved, and you should know before you tap Accept.

The short answer#

Open Settings, scroll to Mail, tap Accounts, then Add Account, and choose Microsoft Exchange. Enter your full work email address and a description, then tap Next. iOS queries Microsoft's autodiscovery service against your email domain. For Microsoft 365 accounts this succeeds within a few seconds and fills in the server settings automatically. Enter your password, complete any multi-factor authentication your company requires, and tap Save.

If autodiscovery fails — which is common with on-premises Exchange — a Server field appears below your email address. Type the Exchange server address your IT team provided, for example mail.yourcompany.com or webmail.yourcompany.com, and then continue with your password.

Once saved, choose which data types to sync: Mail, Contacts, Calendars, and Reminders are all available over Exchange ActiveSync. Push delivery activates for mail, so new messages arrive the instant they reach the server rather than on a polling schedule.

Before you start#

Gather these before you open Settings. The account-add screen moves quickly and having them ready avoids stopping partway through.

• Your full work email address — the one your company issued, not a personal alias.
• Your work password. If multi-factor authentication is required, have your authenticator app or approved phone to hand.
• The Exchange server address, only if your company runs on-premises Exchange rather than Microsoft 365. Your IT team can supply it — it is usually the hostname for Outlook Web Access.
• iOS 17 or later. The steps shown here match iOS 18; the procedure is identical back to iOS 13.
• An MDM enrollment decision, if your company requires one. Some accounts prompt you to install a Mobile Device Management profile during setup. Read the callout below before you agree.

Steps: how to add an Exchange account to iPhone Mail#

Work through these steps in order. The full sequence takes about two to three minutes on a stable Wi-Fi connection.

1. 1

   Open Settings and navigate to Mail

   Open the Settings app — the grey gear icon on your home screen. Scroll down and tap Mail. On iOS 18 you can also reach this at Settings → Apps → Mail.

2. 2

   Tap Accounts, then Add Account

   Tap Accounts. This screen lists every email and calendar account already configured on the device. Tap Add Account at the bottom of the list.

3. 3

   Choose Microsoft Exchange

   From the list — iCloud, Google, Yahoo, Outlook.com, and Other — tap Microsoft Exchange. Do not tap Other for a work Exchange account. Choosing Other and configuring IMAP syncs mail only, on a polling schedule, with no Push delivery and no Exchange calendar or contacts. The Microsoft Exchange option uses Exchange ActiveSync, which handles all of this in a single authenticated connection.

4. 4

   Enter your email address and a description

   Type your full work email address. The Description field fills in automatically — change it to something clear like Work or a company name if you manage several accounts on the same phone. Tap Next.

5. 5

   Let autodiscovery run — or enter the server address manually

   iOS queries Microsoft's autodiscovery service to look up Exchange server settings for your email domain. For Microsoft 365 accounts this completes in a few seconds. If autodiscovery fails, a Server field appears — type the hostname your IT team provided and tap Next. If you see a certificate warning at this step, contact IT before you tap Trust.

6. 6

   Sign in and choose what to sync

   Enter your password and complete any multi-factor authentication prompt. If your company uses Azure AD or Entra ID, you will be redirected to a browser-based sign-in page — that is the expected flow. Accept any configuration profile your company pushes, review the data types to sync (Mail, Contacts, Calendars, Reminders), and tap Save. Mail begins loading within a few minutes.

How the setup differs: Microsoft 365, on-premises Exchange, and IMAP#

Your experience in the steps above will vary depending on which Exchange infrastructure your company uses. The table below covers the three setups you are most likely to encounter. If you are unsure which applies to your account, confirm with IT before starting — the wrong choice can produce an account that saves without error but never delivers mail.

Exchange ActiveSync versus IMAP on iPhone#

Exchange ActiveSync is Microsoft's protocol for mobile devices. It delivers new mail via Push the moment messages reach the server — no polling delay, no schedule — and it carries mail, calendar events, contacts, and tasks in a single persistent connection. When you choose Microsoft Exchange in the account-type list, this is the protocol that runs.

IMAP handles mail only. It fetches new messages on a schedule the iPhone controls — every 15 minutes, every 30 minutes, or on manual refresh — and it has no mechanism to sync Exchange calendar events or contacts. Setting up an Exchange account under Other and configuring IMAP gives you email delivered slowly with no calendar. For a work Exchange account, Microsoft Exchange is always the right choice in the account-type list.

One setting that frequently catches people after a successful setup is Mail Days to Sync. iOS defaults to syncing one month of existing mail, which makes an account with years of archived messages look nearly empty right after setup. To pull more history, go to Settings → Mail → Accounts → your Exchange account → Mail Days to Sync and change it to No Limit or to the longest window you need. The account backfills the history in the background.

What to do when your iPhone Exchange account isn't working#

Most Exchange account problems on iPhone trace to one of seven causes. Find your symptom in the table, confirm the likely cause, and apply the fix. If an account was working and then stopped, start with the password row — an expired or changed credential is the most common reason a previously functional account disconnects without warning.

A faster way to manage your work Exchange inbox#

iPhone Mail with Exchange ActiveSync gets your work messages onto the phone. What it does not do is triage the inbox down to the messages that actually need a response, draft replies in your own voice, or handle routine messages while you are between meetings. If your Exchange account carries meaningful daily volume — the kind where you open the phone to dozens of unread messages and only a handful genuinely require you — an AI-native client picks up where the built-in Mail app stops.

AI Emaily connects your Microsoft 365 or Exchange mailbox using the same OAuth connection Exchange uses, then ranks the inbox to a short list of what needs attention. Replies are drafted in your voice using a user-set Context brain and per-client profiles — not inferred from your historical mail. Every suggested action goes through a Copilot approval step before anything sends, with a full audit trail and undo on everything. We build AI Emaily. It is available as a native iOS app, and Pro comes with a 7-day free trial.