The fastest way to add an email address to Outlook

You can add another email address to Outlook in two ways: as a connected account (which pulls messages from another email service into Outlook) or as an additional alias on your Microsoft account (which lets you send and receive from that address within Outlook itself). The method you choose depends on whether you want to manage a completely separate email account or add another identity to your existing Microsoft account.

If you're adding a Gmail, Yahoo, or other non-Microsoft email address, you'll use the connected account method. If you're adding a second Microsoft email address (like another Outlook.com address), you can set it up as an alias, which is simpler. Both take about five minutes.

Key Takeaways

  • Connected accounts let you pull email from Gmail, Yahoo, or other services into Outlook without leaving Outlook to check them.
  • Aliases let you send and receive from a second Microsoft email address within the same Outlook inbox, useful for work and personal separation.
  • Adding a connected account requires your password from the other email service, but Microsoft doesn't store it — it uses a secure token instead.
  • You can add up to 10 connected accounts and multiple aliases to a single Outlook account.

Adding a connected account from Gmail, Yahoo, or another email service

A connected account pulls messages from another email service into your Outlook inbox. You'll see all your emails in one place, but the original account remains active — if someone replies to you at your Gmail address, the reply goes to Gmail first, then Outlook syncs it.

Open Outlook and go to Settings (the gear icon in the top right). Select Mail from the left menu, then Accounts, then Connected accounts. Click Add account. Enter the email address you want to connect and your password. Outlook will verify the connection — this usually takes a few seconds, though Gmail accounts sometimes require an extra step where you approve Outlook's access through your Google account settings.

Once connected, Outlook will download your recent messages from that account. By default, it syncs new mail every 15 minutes. You can change this interval in the same Connected accounts menu by clicking the account and selecting Sync settings.

Adding an alias to your Microsoft account

An alias is a second email address attached to your Microsoft account. Emails sent to either address land in the same inbox, and you can choose which address to send from when you compose a message. This is useful if you want to keep work and personal mail visually together but send from different addresses.

Go to Settings and select Mail, then Accounts, then Your email accounts. Click Add alias. You can create a new Outlook.com address or add an existing Microsoft email address (like one from Hotmail or another Outlook account you own). Follow the prompts to confirm the alias.

After adding an alias, it appears in your From line when you compose a message. Click the From field and select which address to send from. Replies to that address will still arrive in your main inbox.

What happens when you add a connected account

When you connect an outside email account, Outlook doesn't store your password. Instead, it exchanges your password for a secure token — a temporary credential that lets Outlook access that account without keeping the password on file. This token can be revoked at any time, either through Outlook or through the original email service's security settings.

Your connected account will sync automatically, but the frequency depends on your email provider. Gmail and Yahoo typically sync every 15 minutes. Some providers sync less often. If you need to force an immediate sync, open the connected account in Outlook and click the refresh icon.

Emails from a connected account stay on the original server. If you delete a message in Outlook, it's marked as read or archived in the original account, but not deleted there — this is a safety feature to prevent accidental loss.

Sending email from a connected account

By default, when you reply to an email from a connected account, Outlook sends the reply from that same address. But when you compose a new message, Outlook sends from your primary Microsoft account unless you change the From field.

To send a new message from a connected account, click New mail, then click the From line and select the connected account. The address will stay selected for that message only — the next new message will default to your primary account again. If you want to change the default sending address for a specific connected account, go to Settings > Mail > Accounts > Connected accounts, select the account, and toggle Reply from this account.

Removing an email address you no longer need

To remove a connected account, go to Settings > Mail > Accounts > Connected accounts, select the account, and click Delete. Outlook will stop syncing that account, but the original account remains active and unaffected.

To remove an alias, go to Settings > Mail > Accounts > Your email accounts, select the alias, and click Delete. You can't delete your primary Microsoft email address, but you can delete any aliases you've added.

Troubleshooting connection problems

If Outlook won't connect to your Gmail account, the issue is usually that Google blocks less secure apps by default. When you try to connect, Google will send you a notification asking you to allow Outlook access. Check your Gmail inbox for a message from Google Security, or go to your Google Account settings and look for a prompt to allow the connection. You may need to turn on Less secure app access in your Google Account security settings, though Google is phasing this out in favor of app-specific passwords.

For Yahoo accounts, you'll need to generate an app password instead of using your regular password. Go to your Yahoo Account security settings, select Generate app password, choose Mail and Outlook, and use the password Yahoo provides instead of your regular Yahoo password.

If a connected account stops syncing, try removing it and adding it again. Go to Settings > Mail > Accounts > Connected accounts, delete the account, and re-add it with your current password.

Frequently Asked Questions

Can I add more than one email address to Outlook?

Yes. You can add up to 10 connected accounts from other email services, and you can create multiple aliases on your Microsoft account. All messages appear in your main inbox unless you create rules to sort them into separate folders.

Will adding an email address to Outlook delete it from the original service?

No. Connected accounts remain active at their original provider. Outlook simply syncs a copy of your messages. If you delete an email in Outlook, it's usually marked as read or archived in the original account, not deleted.

What's the difference between a connected account and an alias?

A connected account pulls messages from another email service (like Gmail) into Outlook. An alias is a second address on your Microsoft account that shares the same inbox. Use connected accounts for external email services; use aliases if you have multiple Microsoft email addresses.

Do I need to give Outlook my password to connect an account?

You enter your password once during setup, but Outlook converts it to a secure token and doesn't store the password itself. You can revoke Outlook's access at any time through your email provider's security settings.

Why isn't my connected account syncing?

Check that your password is still correct and that you haven't changed your email provider's security settings. For Gmail, verify that you've allowed Outlook access. For Yahoo, confirm you're using an app password, not your regular password. If it still won't sync, remove the account and add it again.