How to Share an Office 365 Mail Folder with Another Office 365 User in the Outlook Client
Posted by Chase Goodall, Last modified by Donald Sloat on 07 May 2018 04:52 PM
Folder sharing lets other people access one or more folders. However, it does not include permissions for them to act on your behalf. For example, a person who can access your folders can’t reply to email messages or respond to meeting requests for you. If you require another person to act on your behalf, use the "How to Manage Delegates (in Outlook/OWA)" guide.

Folder Permissions:
  1. Right-click on your Mailbox name (e.g., and select “Folder Permissions".
  2. In the Permissions tab, Select the Add (Outlook may be unresponsive for a minute, please wait.)
  3. Search for the person you wish to give permission to from the address list
  4. Make sure they are selected
  5. Press the Add button, and ensure that the right person is in the field next to Add.
  6. Press the OK button.
  7.  Select the person's name
  8. Select the appropriate permissions from 'Permission Level:' drop down list (e.g., Owner, Contributor...). Reviewer rights are recommended at the Mailbox level.
  9. Check the "Folder Visible” box.
  10. Click the OK button.
  11. To share additional folders/subfolders, right-click on the folder or subfolder you wish to share and follow steps 2-7 above. (Recommend also sharing the inbox)

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