The fastest way to create a new autoresponder or broadcast email is to copy an existing one and edit it.
Login to your newsletter app
In the left hand menu, click on Campaigns > Autoresponders
Choose any email. Then scroll right
Click on the CC icon to clone the email
Follow the prompt to update your newsletter. Please make sure to change the TYPE from Autoresponder to Regular if you are creating a broadcast email.
Edit the email as you wish:
Scroll to the bottom and click on Save and next
In the next screen, choose when you want to send your Autoresponder or Broadcast email. Then click on Save and activate