Administrators, Power Users, and Developers" by Sue Mosher I have found
out that custom html-views of folder content can be created using
something like:

<object classid="clsid:0006F063-0000-0000-C000-000000000046"
 id="ViewCtl1"
 codebase=http://activex.microsoft.com/a ctivex/controls/
 office/outlctlx.cab#ver=9,0,0,3203
 width="100%"
 height="410">
<param name="Folder"
 value="\\Private folders\My Folder">
<param name="DeferUpdate" value="0">
</object>

Can this be used to view Contacts or Messages placed somewhere else?
(Eg. on a server accessed using WebDAV og a SharePoint server)

I am trying to implement sharing of e-mail messages using a different
structure than an Exchange server can provide.

Also, does anyone have links to websites where I can learn more about
Folder Homepages in Outlook?