How to add a mailbox in outlook

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Last updated: April 4, 2026

Quick Answer: To add a mailbox in Outlook, navigate to File > Account Settings > Account Settings, then click 'New...' and follow the prompts to enter the email account details. Outlook supports various account types like Microsoft 365, Exchange, POP, and IMAP.

Key Facts

Overview

Adding a new mailbox or email account to Microsoft Outlook allows you to manage multiple email addresses from a single, unified interface. This is incredibly useful for individuals managing both personal and professional emails, or for businesses that utilize different email accounts for various departments or purposes. Outlook provides a streamlined process to add these accounts, whether they are hosted on Microsoft Exchange, Microsoft 365, Outlook.com, or other popular email services like Gmail, Yahoo, or even custom IMAP/POP accounts.

Why Add a Mailbox?

Consolidating your email accounts into Outlook offers significant benefits:

Adding a Mailbox: Step-by-Step Guide

The process for adding a mailbox varies slightly depending on your Outlook version and the type of email account you are adding. However, the general steps are consistent.

For Outlook 365, 2019, 2016, and 2013:

  1. Open Outlook: Launch the Microsoft Outlook application on your desktop.
  2. Navigate to Account Settings: Click on the File tab in the upper-left corner of the Outlook window.
  3. Select Account Settings: In the 'Account Information' screen, click on Account Settings, and then select Account Settings again from the dropdown menu. This will open the 'Account Settings' dialog box.
  4. Add a New Account: In the 'Account Settings' dialog box, click the New... button.
  5. Enter Email Address: Outlook will likely prompt you to enter your email address first. Type the email address you wish to add and click Connect.
  6. Enter Password: Outlook will then ask for your account password. Enter it and click OK or Connect.
  7. Automatic Configuration: For most common email providers (like Microsoft 365, Outlook.com, Gmail, Yahoo), Outlook will attempt to automatically configure the server settings (IMAP, POP, Exchange ActiveSync). If successful, you will see a confirmation message.
  8. Manual Setup (If Necessary): If automatic configuration fails, or if you are adding an account with specific server settings, you will need to choose Manual setup or additional server types at the prompt. You will then need to select the account type (e.g., POP, IMAP, Exchange) and enter the incoming and outgoing mail server details, port numbers, and encryption methods provided by your email host.
  9. Complete Setup: Follow the on-screen prompts to finish the process. You may be asked to restart Outlook.

For Older Versions of Outlook (e.g., Outlook 2010, 2007):

The steps are very similar. You'll typically find the 'Account Settings' option under the Tools menu.

Adding an Additional Exchange/Microsoft 365 Mailbox (Delegated Access or Shared Mailbox):

If you need to access a shared mailbox or a mailbox where you have been granted delegate permissions (e.g., a manager's inbox), the process is slightly different and often handled through 'Advanced' settings or by Outlook automatically detecting it if your organization uses specific Exchange configurations.

  1. Follow steps 1-3 above to open the 'Account Settings' dialog box.
  2. Click New....
  3. Instead of entering an email address, you might need to select Microsoft Exchange Server or compatible service if adding a primary Exchange account.
  4. For shared or delegate mailboxes, after your primary account is added, they might appear automatically in your folder list. If not, you may need to go to File > Account Settings > Account Settings, double-click your primary Exchange account, click More Settings..., go to the Advanced tab, and click Add... under 'Mailboxes'. Enter the name of the shared mailbox or the user whose mailbox you want to access.

Important Considerations:

By following these steps, you can effectively add and manage multiple mailboxes within Outlook, enhancing your email organization and productivity.

Sources

  1. Add an email account to Outlook - Microsoft Supportfair-use
  2. How Outlook uses the Exchange ActiveSync protocol - Microsoft Supportfair-use
  3. Email client - WikipediaCC-BY-SA-4.0

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