Outlook on Windows (2010/2013)
In the navigation pane, select the folder you want to share
In the Folder tab, click Folder Permissions
- Click Add…:
- Search for the person you want by name. Click the Add -> button, and press OK once you’re done adding users
- Customize their permissions for this folder by using the Permission Level drop-down menu and the checkboxes below
- Click OK once you’ve finished setting permissions
Note: It is not recommended to share your entire mailbox. If you need to grant this level of access to someone, adding them as a delegate is the best option.
Outlook for Mac 2011
If you use Outlook for Mac 2011, please see this guide.