About creating a new Email Template
Under your email template section advanced commands drop down (bottom left), there is an option "Developers: Show sendMessage() PHP". This option will take you to a page that lists all the sendMessage() functions for each template. And by calling those sendMessage() functions the email will be sent with the set data. You can also specify what placeholders to use for the template as well.
Let me know if you have any questions!
If you are using our membership plugin, I think that does send email to all new user by default with the template USER-SIGNUP. But anyways here is the step you should do to add code that sends an email template:
1. Find out where (or when) you want to send it. For example user notification email, you would probably like to send them right after the account is created and saved in the back-end. Could be somewhere on the signup page
2. Get the sendMessage() code from the "Developers: Show sendMessage() PHP" option in the advanced option dropdown. Copy and paste it into the location you want the email to be sent
3. Modify sendMessage() function if you want to customize placeholders or just assign correct data to the placeholders that will be used in the email template
That's the detailed process. Hope that helps you! And if you want you can always send a ticket to firstname.lastname@example.org and we will help you set things up.