Webmail Overview (Legacy 2010)
From Help Wiki
Evergreen uses Outlook Web App for internet email, calendar, contacts, etc.
Outlook Web App is almost as feature rich as a full email app such as Outlook, Apple Mail or Thunderbird, allowing you to access and edit your email, calendar, contacts, public folders and other items.
The screenshot below shows several of Outlook Web App's most used features (click to zoom, click again to show full-size).