Your email marketing suite stores email content as ‘templates'. These can be used in campaigns (broadcast emails) and in automations (programmed sequences of emails). Although you can create a new template at various stages of campaign and automation workflow setup, the most organized method is to compose emails first as templates and then select the templates you want to send from within a campaign or an automation workflow.
Here's how to create and work with email templates:
Once you have built and saved a template to send, here is an example of fetching and using a template to send in a campaign: