This is a link to the Google website.
mailto:?to=email%40example.com
mailto:?subject=mailto%20uri%20scheme
mailto:?cc=email%40example.com
mailto:?bcc=email%40example.com
mailto:?to=email1%40example.com%2C%20email2%40example.com%2C%20email3%40example.com
mailto:?cc=email1%40example.com%2C%20email2%40example.com%2C%20email3%40example.com
mailto:?bcc=email1%40example.com%2C%20email2%40example.com%2C%20email3%40example.com
mailto:email1%40example.com%2C%20email2%40example.com%2C%20email3%40example.com
mailto:?body=line1&body=line2&body=line3
mailto:?body=&body=&body=&body=line1&body=line2
mailto:?body=&body=&body=&body=line1&body=&body=line3
mailto:?body=&body=&body=&body=line1&body=&body=line3&body=&body=&body=
mailto:?subject=not%20used&subject=not%20used&subject=used
mailto:email1%40example.com?to=email2%40example.com&to=email3%40example.com
mailto:?cc=email1%40example.com&cc=email2%40example.com&cc=email3%40example.com
mailto:?bcc=email1%40example.com&bcc=email2%40example.com&bcc=email3%40example.com
mailto:?subject=raining%20cats%20%26%20dogs
mailto:Tim%20%3Ctim%40example.com%3E
mailto:%22Tim%20Jones%22%20%3Ctim%40example.com%3E
mailto:%22Timothy%20%5C%22The%20man%5C%22%20Jones%22%20%3Ctim%40example.com%3E
mailto:%22%5C%5C%20is%20a%20backslash%22%20%3Ctim%40example.com%3E
mailto:%22That%20%5C%22is%5C%22%20cool%22%20%3Ccool%40example.com%3E%20(not%20really)
mailto:test%20%3Ctim%40example.com%3E%20(let%20us%20try%20(nested)%20comments)
The examples on this page were created by Michael A. Puls II and can be found on his website at http://shadow2531.com/opera/testcases/mailto/test.html