Sharing your app is one of the most important things you or your users can do, and the Share action makes it simple.
When a user taps a "Share" action they will be able to email, text, or share their app in one of their social channels. The Action will automatically insert a share message that you designate.
The Share action is perfect to add a referral button to your app to remind users to share your app with others.
If you want the action to share the host app, then leave the URL field blank. If you want to share a different URL, then enter it in the URL field.
Add a "share message" if you want a message to introduce the URL you are sharing.
Reference the Action Formatting and Controls FAQ for a refresher on the controls that are common to Actions.