| | Outlook 2003 | Outlook 2007 | Outlook 2010 |
| Exchange 2003 (SP2) | Outlook Anywhere |
| RMS e-mail |
| Cached mode |
| Reduced Network traffic (50-70%) |
| Search Folders |
| | | | |
| Exchange 2007 (SP1) | Outlook Anywhere |
| RMS e-mail |
| | Managed Folders |
| | Sender ID Anti-Spam |
| | AutoDiscover Settings |
| Cached mode |
| Reduced Network traffic (50-70%) |
| | Server Search |
| Search Folders |
| | Resource Booking Attendant |
| | Schedulable OOF |
| | Internal/External OOF |
| | Voice Mail |
| | Scheduling Assistant |
| | Share Calendar Information |
| | Calendar Attendant |
| | | | |
| Exchange 2010 (RTM) | Outlook Anywhere |
| RMS e-mail |
| | AutoDiscover Settings |
| | Managed Folders |
| | Sender ID Anti-Spam |
| | | Protected Voice Mail |
| | | Message Tracking |
| | | Retention Policies |
| | | Email Moderation |
| Cached mode |
| Reduced Network traffic (50-70%) |
| | Server Search |
| | | Larger Mailbox Support (performance and cost) |
| Search Folders |
| | Internal/External OOF |
| | |