How to write in 'mailto' body link to current page

Question

I have mailto button in all pages of my site and I want to write reference to that page in e-mail body.

In one page I can have

Answer 1

You can put a JS on every page that can modify all the hrefs of all email link when the document loads.

I'll use jQuery for the example code because is more compact, but this can be achieved also with pure JS:

$(document).ready(function(){
    $(".email").attr("href", "mailto:?subject=Interesting%20information&body=I thought you might find this information interesting:%20%0d%0a"+window.location);
});