You can easily add a link in your ASP and ASP.NET pages that, when clicked, runs the default mail program (e.g. Outlook) and allows the user to send a message to the email address you provide:

Click here to send a message

Interestingly, you can preload other fields in the email message by appending arguments to the query string:

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Here’s how the above link appears to users. Click on it to see what happens in your mail program:

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You can also use the CC and BCC fields, as in:

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Notice that all the links above should be entered on a single HTML line.