To use the [man]mail/man function, you need to set 'SMTP' and 'sendmail_from' (on Windows), or 'sendmail_path' (for Unix).
Assuming you're running on Windows, you would need to change 'SMTP' to your SMTP server address.
If you're instead wanting a link to pop up the user's default email program with a message to you, use a 'mailto:' link, i.e.
<a href='mailto:myaddress@mydomain.com?subject=Hey+there!'>E-mail me</a>