We've all sent emails with attachments, but oftentimes, we don't know what happens to that email or that attachment once it leaves our inbox (outbox?). When you send content out through ClearSlide either when Creating a Link or Composing an Email, you'll be able to know exactly when your content was opened, how much time it was viewed for, and exactly what pages got the most attention. That's so powerful!
Additionally, in case you're a bit of a control freak, you can also retroactively modify the content that you sent at any point. Disable it, put an expiration on it, make it downloadable. It's all up to you. Now try to get a regular email attachment to do that!