Outlook appointment as exchange server level

I would like to make a form which can send a reminder to a specific user's Exchange Outlook account when a button is clicked on a webpage.

Is this possible? Is EWS the best approach?

I开发者_开发问答 am using Exchange 6.5, Outlook 2003, and .NET 3.5.

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Exchange 6.5 is Exchange 2003. The best approach is to use WebDAV protocol, but not easy. There is a library available for that. This might be your best option.