There are two ways to open a shared mailbox, common also called an organization mailbox, or "org box" for short.
First, you must have the proper permissions to send from the shared mailbox. Contact the Service Desk for the proper access (you must have a need-to-know).
Web Browser
- Go to https://outlook.office.com/mail
- In the top right, select your user profile.
- Select "Open another mailbox".
- Type in the address of the shared mailbox and select "Open".
Desktop (classic)
- Open "Outlook (classic)".
- Select "File" in the top bar.
- On the "Info" tab, click "Add Account."
- Type in the address of the shared mailbox and select "Connect".
Mobile (iOS)
- Navigate to the App Store and download Outlook.
- Open Outlook.
- Tap the Home icon in the top left corner. 
- Select the icon that looks like an envelope at the bottom. 
- Tap "Add Shared Mailbox".
- (Optional) If there are multiple accounts that appear, select the one with your company name on it.
- Enter the shared mailbox address you wish to add.
- Select "Add Shared Mailbox."
Was this article helpful?
That’s Great!
Thank you for your feedback
Sorry! We couldn't be helpful
Thank you for your feedback
Feedback sent
We appreciate your effort and will try to fix the article