Create the appointment in Outlook, then use the Forward as vCal or Forward as iCal command to include the appointment as an attachment in your message. Your message should instruct the user to double-click the file and open it.

--
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx

"Katusha @ Intel" Katusha @ wrote in message ...
I want to be able to send out an email with information about a meeting, and
inside the email have a button that says "ADD TO CALENDAR" on which they can
press and open a calendar invite. I have seen other emails with this option,
but I don't know how they did this...