Sending someone a Link in Outlook that refers to a local application with a param

I want to send someone a HTML Mail via my application (c#). This Mail contains should contain a clickable 开发者_JAVA百科html link that refers to a local application. f.e. :

<a href="c:\myapplication.exe -1234">click</a>

It already works to send the mail but the link does not appear as a link. I also tried the "file:/// ... " thing but it does not work in combination with a param.

Does someone know another solution ?

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Due to Security this does not work.