Links must be shortened using the link shortening tool to enable link tracking. This can be done while create your message by click the blue "Shorten URL(s)" button.
*Note: a recent Apple iOS update changed the way links are displayed in the browser. Links that include [http://] will show a preview of the URL. Delete or replace [http://] with [www.] to disable iOS link preview
Track Link Performance
Once a message has been sent, you can view link performance by clicking on the link under Link Tracking in the View Message page.