You can download and set up Outlook 2007®, Outlook 2010®, Outlook 2011® (Mac), or Entourage 2008® (Mac) to access your Hosted Exchange Email mailbox.
Email administrators can also log in to the Hosted Exchange Email Manager and then click Download Outlook.
Outlook 2007: Setting up an account
Setting up Outlook 2010 & 2013
Apple Mail: Set up email