A dumb question regarding sending email

Hi gang: I wish I had another identify for asking dumb questions, but it's late and I'm tried -- so here goes. I have a herdoc that I send out as an email -- no problems there. However, how do I include a link within it? If I use http://example.com, it's just a string but not an actual link. So, how do you format a link in a heredoc? Thanks, tedd -- ------- http://sperling.com http://ancientstones.com http://earthstones.com