When you link an email address, Xara automatically changes it to mailto:name@webhost.com
If you add this this a ?subject=Feedback from My Website it becomes mailto:name@webhost.com?subject=Feedback from My Website
As has been pointed out, this will not work with webmail or some email clients, but it works with most and when the visitor clicks the link their email program opens and the subject is automatically inserted.
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