To create your first Broadcast go to My Audience and choose broadcasts & automation
Click to create a new one
After you create it you'll be able to customize your outgoing email, and add an audience segment who should receive this automated email.
This means you should previously create your desired audience segment. To see how that is done please check out this article here - http://help.vooplayer.com/article/469-my-audience-data
Creating an audience segment means you can choose any specific category of your audience and send them an automatic email.
For example you can set that everyone who watched over 50% of your video will receive an email.