We are both using Outlook 2003 with SP1 installed. I checked the rich text
settings and they are correct as well. Any more thoughts?
It could be that your mail server is blocking the rich-text content. You might want to send an iCalendar item instead.

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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
> We are both using Outlook 2003 with SP1 installed. I checked the rich text
> settings and they are correct as well. Any more thoughts?
>
>> What mail program is he using? If Outlook, what version?
>> >I am trying to invite a colleage to a meeting but on his end he receives an
>> > email, instead of an invitation. There is no option to accept decline or
>> > reschedule on his end. I am using Outlook 2003. When he sends me an
>> > invitation it comes thru correctly as an invitation. Also, if I respond to
>> > his invite it is returned to him in the proper format and no longer as an
>> > email. Does anyone have any suggestions as to what may be causing this?