Be careful not to display tracked URLs in plain text.
When a recipient clicks on a link to be tracked, the browser first opens - for a brief moment - a web page on a server of your email marketing provider (in this case, Quentn). There the click is registered and the recipient is immediately redirected to the actual target page. This process allows you to see how many recipients (and possibly which recipients) clicked on the link.
However, if a link is displayed in plain text in the email, there is no match between the URL that is displayed to the recipient and the URL to which they are first directed. Many email providers and clients consider this as phishing or a fraud attempt and then either move the email directly into the spam folder or at least display a very clear message. Both have a negative effect on the sender's reputation and should therefore be avoided.