After you have completed the previous stages (1 through 4) in your Newsletter it's time to create and edit the content that your audience will see.
Click on Email Content or Next > choose your template and click Next > edit and personalize your email.
Once this is done click on preview and click "send test email"
Now type the email address where you want to send the test email
Once you click send, the email will be arriving in your inbox within a couple of minutes.
Then you can save and close, or keep editing.