The Link property array is used to enumerate the hyperlinks
which were found in the current message part. This property array is
zero based, meaning that the first index value is zero. The total
number of links in the current message part can be determined by
checking the value of the LinkCount property.
The message contents are decoded and converted to UTF-8 before
searching for matching links. If the message content uses HTML markup,
it is possible for this property to return links in the HTML header as
well as the body. Messages which are composed using Outlook will
typically have links to XML namespaces like
http://www.w3.org/TR/REC-html40.
This property can only be used to extract links from message text
and cannot be used with file attachments or encoded binary data. For
example, if the current message part contains encoded image data, the
LinkCount property will return zero. Links which do not reference
files, such as mailto: or data: will be
ignored when searching the message.