Vyatcheslav Yatskovsky wrote:

I have success with \goto instead of \useURL. Actually, I like \goto even more, because it is more simple.

\goto{http://url.com/index.html}[url(http://url.com/index.html)]

My question is: how to mark a email in this way? (So that clicking on it opened mail client)

Look into the ‘mailto’ URL type, e.g., \goto{mailto:you@mail.net}[url(mailto:you@mail.net)] See http://www.outfront.net/tutorials_02/adv_tech/mailto.htm for more on this. —Joel Salomon