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Compare Microsoft Exchange Versions

 

Exchange 2003

Exchange 2007

Exchange 2010

Exchange 2013

OWA Design Basic version only Includes drag and drop, right click, spell check. Premium version only available for Internet Explorer. Includes mailbox search, preview pane, conversation view. Premium support for Explorer, Safari, Firefox, and Chrome. Redesigned in Windows 8 style, optimized for touchscreens, automatically adjusts for mobile devices. Inline composition emails, tasks, etc. (no pop-ups).
OWA Offline Access Not available Not available Not available Available for HTML5 browsers
OWA Single Page View Not available Available in Internet Explorer Available for all browsers Available for all browsers
OWA Calendar Basic calendar view Views for daily, weekly, and work week. View multiple calendars side-by-side. New month and agenda views. Able to overlay multiple calendars.
Instant Messaging Support Not available Not available Integrated IM with presence in Outlook and OWA Integrated IM with presence in Outlook and OWA
Conversation View Only with Outlook 2007 Available in Outlook Available in Outlook, OWA, and mobile phone Available in Outlook, OWA, and mobile phone
Advanced Inbox Search Outlook only Outlook and OWA Outlook and OWA Outlook and OWA
View Shared Calendars Outlook only Outlook and OWA Outlook, OWA and mobile phone Outlook, OWA and mobile phone
Third Party Mail Not available Not available Outlook Social Integration of Bing
Apps None None Integration for LinkedIn, Facebook, Twitter, and other social media. Social media and maps integration. Wide variety of other apps on Microsoft Marketplace.
Unified Contacts Not available Not available Outlook Social Connector to integrate social network contacts. Integrate contacts from social media sites.
Contact Search Basic contact search Nickname cache (autocomplete) Outlook Social Connector allows searching contacts from social networks. Fast-search across personal contacts, social networks, and GAL. Phonetic search, enhanced nickname search
Infrastructure Runs on 32-bit hardware. Single Copy Cluster (SCC) creates single point of failure Runs on 64-bit hardware for faster performance High availability offered through Database Availability Group (DAG) New data store with improved indexing and searching