Option 1: Copying Messages From a Shared Folder
Bill, right-click on the folder you wish to share and select "Sharing...". Select
the radio button "Shared with", add Susan to the "Share list:", under "Additional
access" be sure to add at least "Edit" and possibly "Delete", click OK. You're
now prompted to send a message to Susan informing her of the shared folder access.
Type in a message if you like, and click OK.
Susan, open the "Shared folder notification" from Bill and in the "Install Shared
Folder" window click "Next". Name the folder or accept the suggested name, and
select where you would like Bill's shared folder to appear in your folder structure.
Remember, this is Bill's folder and it's simply being shared with you. When Bill
deletes this folder it will be deleted from Susan as well.
1a: Susan, now create a new folder and copy the messages
you need from Bill's shared folder before she deletes it.
Option 2: Sending/Retrieving the Messages as Attachments
Susan, open the folder containing the messages you think Bill should have,
select all the messages to be sent and forward as attachment.
Bill, create a new folder for the messages from Susan. After you receive Susan's
message select all the attachments in the forwarded message and drag-n-drop those
on the newly created folder. This will restore each attached message as a new
message in the folder. Practice with small numbers.