Values.EmailTemplateContentSourceThe content of the email, composed of a subject line, an HTML part, and a text-only part.
type nonrec t = {subject : EmailTemplateSubject.t option;The subject line of the email.
*)text : EmailTemplateText.t option;The email body that will be visible to recipients whose email clients do not display HTML.
*)html : EmailTemplateHtml.t option;The HTML body of the email.
*)}