They don't appear to be...
mailto:me@foo.com [link|mailto:me@foo.com|mailto:me@foo.com]
[mailto:me@foo.com] [link|mailto:me@foo.com|mailto:me@foo.com]
[mailto:me@foo.com|Me, of course] [link|mailto:me@foo.com|Me, of course]
Regards,
-scott anderson
"Welcome to Rivendell, Mr. Anderson..."