Normally you'd click the innmate's name anywhere it's "clickable" then click the Contact tab on their profile page. But the contact link has been broken for several weeks. It's part of Swirt's battle with spam on this site, which is especially heavy this time of year. I think he hopes to get it working again after Christmas.
Give them a shout out here if you want and maybe they will hone in on it. Some od not have email links as they were getting unsoliticed email, and I think Swirt disengaged the thing due to the same issue.