If you have Microsoft Outlook 98 or Outlook 2000, Microsoft provides a feature called Net Folders that transfers information among a group of people with special e-mail messages; this feature is more stable in Outlook 2000, but still not 100% reliable.
The Net Folders feature was added in Outlook 98 to meet the need for some kind of sharing in a non-Exchange Server environment. It replicates information via special e-mail message and, therefore, requires that the people participating the the sharing all be able to communication via e-mail. Unfortunately, Net Folders is nowhere near 100% reliable. Users may experience data that doesn't replicate, shares that stop working completely and other problems. See Sharing with Net Folders.
However, this feature doesn't exist at all in Outlook 2002 and later versions and you'll need to change to a new method of sharing when you upgrade your version of Outlook.
The tools listed below use a mechanism similar to Net Folders — email messages containing data — to transfer information between users.
Team contacts, calendar, documents, and discussion -- much like Team Folders or SharePoint Team Services, but with no requirement to install Exchange Server. Data is shared via special email messages (as in Net Folders in Outlook 98 or 2000 or synchronized via the 4Team Online web service. Outlook 2000 or later.
- Sharing an Outlook mailbox with your team members
- Synchronizing Microsoft Outlook on two machines
- Personal Data Interchange — Details on the vCard, vCalendar and iCalendar specifications for sharing. Outlook supports these, but they only let you share one contact or calendar item at a time. And Outlook does not support the VTODO and VJOURNAL types of iCalendar items, only VEVENT.
- Sharing your Outlook information by Outlook MVP Eric Legault