Email Link Performance Report Shows "${button-link}" Instead of URL
Issue
"${button-link}" appears on the Email Link Performance report in place of the URL the buttons point to.
Solution
To stop this "${button-link}" from appearing on the reports, edit the text version of the emails to replace the "${button-link}" with the URL the button points to.
This occurs because the text version of the email didn't get edited to provide a valid button link. The "${button-link}" value is part of HTML templates and if the setting 'Copy HTML to Text version of email' is checked then those values get copied across. From there, if the text version doesn't get edited or reviewed after that copy over happens, tracked links for "http://${button-link}?mkt_tok=..." will be sent out for those leads that get the text version of the email in place of the URL the button points to.
The next question after hearing this solution is often, "If this is just for the text version, who is reading the text version of emails?", and the answer is that it's probably automated link scanners or security software visiting the link and triggering the click to show on reports.