Click on that link with the arrow. It will automatically come up as an email box. Then just type in the email address at the top, and a message in with the link in the main writing area. Click send mail.
My computer sent email from "Email a link to this thread" for years. As of last Fall, won't send anymore. David helped but couldn't fix it. The mail page comes up with attachment but when I hit send a pop-up appears stating "connecting to imap.aol.com" then "connecting". Runs for a minute then displays "Failed".