This usually happens only on iOS devices. When a http:// or https:// link is included at the end of a message, iOS will show the link as a preview first. The user then has to click a second time to go to the final URL. Quite annoying in most cases.

To get around this issue, either:

  1. remove http:// or https:// from the link, or
  2. add additional text after the link. If the http:// or http:// link is not at the very end of the message, iOS will not show it as a preview, but rather a clickable link.

Our friends at Tatango made a really helpful video explaining this: 

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