Enable/Disable Mailbox features in Exchange 2010

This guide shows you how to enable or disable features on a mailbox:

• Open up the Exchange Management Console.
• Expand Recipient Configuration.
• Click Mailbox.
• On the right hand side double click the mailbox you want to modify.

• Step 1 -> Right click on the user account.
• Step 2 -> Click on Properties.

• Step 1 -> Click on the Mailbox Features Tab.
• Step 2 -> you can enable/disable features as you need for a user.
• Once done click the ok button.

Hope it helps.