Unlike the default 'base' emails, priority emails cannot be unsubscribed from. This is achieved by sending them through a dedicated 'priority' message stream in Postmark.

Render an Phoenix template and set the body on the email.

Pass an atom as the template name (:welcome_email) to render HTML and plain text emails. Use a string if you only want to render one type, e.g. "welcome_email.text" or "welcome_email.html". Scroll to the top for more examples.