20Apr/100
Specifying a subject and a body of the message in e-mail link
Very simple solution, which is very useful and saves your website visitors time when writing you a letter.
<a href="mailto:email@gmail.com?subject=Hello Web master&body=Howdy master">email@gmail.com</a>
Result — email@gmail.com
If you want to add another line in body, add another &body=text in the end!