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To add a mailbox manually from the main Outlook screen
- Click on the File menu
- Click on Account Settings – Account Settings
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- Right-click on a current mailbox in the right-hand column
- Click on Data File Properties - This will prompt a window to open.
- Click on the Change button
- Select More Settings
- Advanced button - this will prompt another window to open.
- Click on the Advanced tab
- Click on the Add button, type the mailbox name & click OK
- It should then appear in the mailbox list:
- Repeat for additional mailboxes
- Click OK
- Then Next & Finish
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