"Never say Never"
Although you cannot do this directly, I have found a work around!
Given you have the appropriate permissions to do so.
Open the users profile in Active Directory.
Select the Exchange Advanced Tab>Mailbox Rights
Add yourself with Full Mailbox Rights. If you are a Domain Admin you should already have full access.
Apply, Close.
Log onto the PC as this user.
Open Outlook>Go to Tools>Options>Delegates.
If you are not already added as a delegate, add yourself here.
Check the Calendar permissions, If you are already an owner of the Calendar it should say Custom.
Otherwise choose Editor.
At the bottom check the box that says "Delegate can see my private items"
Apply Changes, close.
Still in this users Outlook, right click on their Calendar and choose Properties.
Select the permissions tab
Check your name is added here.
If your permission level is not already set to Owner, change it here.
Apply Changes, Okay,
Close Outlook.
Log off as this user.
Log back onto PC as you.
Open your Outlook.
If you dont already have one, Create a New Personal Folder.
Then go to Tools>Account Settings> Dbl Click on your account to open it
Choose More Settings>Advanced Tab
Under Mailboxes> Open these additional Mailboxes - Add the Mailbox that contains the Calendar.
Apply, Okay, close.
You should now be back at your Main Outlook Window and should now see the Mailbox added on your left.
Expand the Mailbox, right click on Calendar.
(Notice you still cannot send the Calendar Via Email)
However, now you can choose COPY.
It will ask you where you would like to Copy the Calendar to.
Choose your newly or already created personal folder.
Select Okay.
Open your personal folder and you will find that the Calendar has been copied to it.
Right click on Calendar, Choose Send Via Email.
