How to Delete an Email Address From Outlook

Managing your contacts and saved addresses in Outlook isn't always straightforward. Whether you're trying to remove an old address that keeps appearing in autocomplete suggestions, delete a contact entirely, or disconnect a linked email account, each scenario involves a different process. Understanding which one applies to your situation is the first step.

What "Deleting an Email Address" Actually Means in Outlook

The phrase covers at least three distinct actions, and confusing them is the most common reason people get stuck:

• Removing an autocomplete suggestion — deleting a saved address that Outlook suggests as you type in the To field
• Deleting a contact — removing someone from your People/Contacts list permanently
• Removing a connected email account — disconnecting an email account you've added to Outlook (such as a Gmail or secondary work account)

Each of these works differently, and the steps vary further depending on whether you're using Outlook for Windows, Outlook for Mac, Outlook on the web (OWA), or the new Outlook app.

How to Remove an Autocomplete Email Suggestion

Outlook stores previously used email addresses in a local cache called the AutoComplete list. These aren't contacts — they're just addresses Outlook has seen you use before. They appear as dropdown suggestions when composing a new message.

To remove a single suggestion:

1. Start composing a new email and begin typing the address in the To field
2. When the suggestion appears in the dropdown, hover over it
3. Click the X that appears to the right of the suggestion, or press the Delete key when it's highlighted

This removes that specific entry from the cache without affecting your contacts list.

To clear the entire AutoComplete cache (Outlook for Windows):

1. Go to File → Options → Mail
2. Scroll to the Send messages section
3. Click Empty Auto-Complete List

On Outlook on the web, the autocomplete list is managed server-side by Microsoft, and individual entries can be removed using the same hover-and-X method when composing a message.

How to Delete a Contact in Outlook

If the email address belongs to someone in your People or Contacts folder, removing the autocomplete suggestion won't delete the underlying contact. You need to do that separately.

In Outlook for Windows or Mac:

1. Navigate to the People section (the icon that looks like a silhouette, usually in the bottom-left navigation bar)
2. Search for or browse to the contact you want to remove
3. Right-click the contact and select Delete, or select it and press the Delete key
4. Confirm the deletion if prompted

In Outlook on the web:

1. Click the People icon in the left sidebar
2. Find the contact and open their card
3. Click the three-dot menu (⋯) and select Delete

Deleted contacts move to the Deleted Items folder first. To permanently remove them, you'll need to empty that folder or delete the contact again from there.

How to Remove a Connected Email Account From Outlook 📧

This is a different action entirely — you're not deleting an address from a list, you're disconnecting an account that Outlook has been syncing.

In Outlook for Windows:

1. Go to File → Account Settings → Account Settings
2. In the Email tab, select the account you want to remove
3. Click Remove and confirm

In Outlook on the web (Microsoft 365): Connected accounts (like a personal Gmail you've synced) can be removed under Settings → Mail → Sync email.

In the new Outlook app: The interface has shifted — account management is typically found under Settings → Accounts. The exact path can vary with app updates, so checking under the gear icon is the most reliable starting point.

⚠️ Removing a connected account does not delete the emails already downloaded to Outlook. It stops future syncing. If you want those messages gone too, you'll need to delete them manually.

Variables That Affect Which Steps Apply to You

Why Deleted Addresses Sometimes Come Back

This is a frequent frustration. An address you've removed reappears because:

• Contact sync is still active — if your phone or Google account is syncing contacts to Outlook, a deleted contact may be restored on the next sync cycle
• Shared address books — on Exchange or Microsoft 365, contacts stored in a shared directory aren't yours to delete
• The AutoComplete cache wasn't cleared — removing the contact doesn't remove the cached autocomplete entry, and vice versa
• Cached offline data — Outlook in cached exchange mode may take time to reflect changes made on the server

The relationship between contacts, autocomplete entries, and synced accounts is what makes this topic more layered than it first appears. 🔍 Which of these is affecting your setup — and how they interact with your specific account type and devices — determines what combination of steps will actually resolve it.