In your process design, you may include a Tool and map it to the Email Tool.
In the plugin configuration, you will need to setup the email server settings.
Figure 1: Setting up the Email Settings.
In the next tab, you may customize the content of the email.
Figure 2: Customizing the Email content.
You may make use of hash variables in your email message to gain access to useful information such as the requester's details, form data and so on.
Note: If you would like to set up a Task Notification on new tasks, please see Email Notifications.