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Overview
This article provides step-by-step instructions to add a shared mailbox in the New Outlook, both on the desktop client (Windows/Mac) and in the Outlook Web App (OWA). Shared mailboxes allow teams to manage group emails collaboratively without sharing login credentials. This guide will help you quickly access a shared mailbox to send, receive, and manage messages efficiently.
For additional help, you can also watch the instructional video on YouTube: How to add a Shared Mailbox to the New Outlook
Procedure
Outlook Desktop Client (Windows or Mac)
Step 1:
Open the New Outlook from your desktop.
Step 2:
In the left navigation pane, right-click the account that has a Shared Mailbox. Select, Add shared folder or mailbox.

Step 3:
Enter the name or email address of the shared mailbox, then click Add.

Note: The shared mailbox will appear in your folder list and remain there for future sessions.
Outlook on the Web (OWA)- Method 1
Step 1:
Go to https://outlook.office.com and sign in with your NMSU email address and password.
Step 2:
In the left navigation pane, right-click the account that has a Shared Mailbox. Select, Add shared folder or mailbox.

Step 3:
Enter the name or email address of the shared mailbox, then click Continue.

Note:The shared mailbox will appear in your folder list and remain there for future sessions.
Outlook on the Web (OWA)- Method 2
Step 1:
Go to https://outlook.office.com and sign in with your NMSU email address and password.
Step 2:
In the top right-corner, click your profile picture. A dialog box will appear, select Open another mailbox.

Step 3:
Enter the name or email address of the shared mailbox, then click Open.

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