Display name: Joe Schmoe
E-Mail address: jschmoe@abc.com
Since the display name contains a space, double-quote it and follow it with the e-mail address surrounded by < and > characters, like this:
"Joe Schmoe" <jschmoe@abc.com>
Next, encode all the reserved characters using URI encoding and include it in a mailto anchor tag:
<a href="mailto:%22Joe%20Schmoe%22%20%3cjschmoe@abc.com%3e">Send e-mail to Joe Schmoe</a>
Here is a working link:
Send e-mail to Joe Schmoe