1806. Share email folder

How can I share an email folder with another Office 365 user.

1. Right-click on your Mailbox name (e.g., Mailbox-Doe, Jane) and select Properties for "Mailbox - Doe, Jane".
2. Select the Permissions tab.
3. Select the Add button.
4. Select the person you wish to give permission to from the address list and press the Add button.
5. Press the OK button. 
6. Click on the person's name and select the appropriate permissions from 'Permission Level:' drop down list (e.g., Owner, Contributor...). Reviewer rights are recommended at the Mailbox level. The option "Folder Visible" must be selected. 
7. Click the OK button. 
8. To share additional folders/subfolders, right-click on the folder or subfolder you wish to share and follow steps 2-7 above.
9. To access another person's mailbox: Choose File | Account Settings.
10. Select your Office 365 account and click the Change button.
11. Click the More Settings button.
12. Click the Advanced button.
13. Under Mailboxes, 'Open these additional mailboxes:' click on the Add button and type the person's name in the window (e.g., Jane Doe), and click the OK button.
14. Click the OK button.
15. Ciick the Next buton.
16. Click the Finish button.
17. Restart Outlook.

https://its.uiowa.edu/support/article/2651