Make sure you have Published your AuditionDrop. Tap Publish in the top right of the preview screen.
You can check in Share Audition menu. If it doesn't say View AuditionDrop or Resend AuditionDrop you need to publish first by tapping on Share as AuditionDrop.
We do not send emails for an AuditionDrop from our server. Slatable creates an email using Apple's built-in Mail app.
To have Slatable create an email for you please configure Apple's email app.
If you use a different default email app Slatable will create a link to your AuditionDrop after publishing or by tapping Share Audition > Copy AuditionDrop Link.