Links for mail in HTML.
Its very simple. Its the same as a http:-link, you just place
mailto:
and the email-address.
<A HREF="mailto:webmaster@webmaster2020.com">webmaster2020</A>
Here you send a mail to webmaster 2020.You can add a subject:
<A HREF="mailto:webmaster@webmaster2020.com?subject=Webmaster2020">Webmaster2020</A>
Or you can send to multiple persons at the same time.
<A HREF="mailto:webmaster@webmaster2020.com,someone@somewhere.com?subject=Webmaster2020">Webmaster2020</A>
That's basic what you can do with email links.