Values.EmailContentSourceContains the subject and message of an email.
type nonrec t = {subject : EmailSubject.t option;The subject of the email.
*)additionalMessage : NotificationAdditionalMessage.t option;The message that you want to send. The message can be up to 200 characters.
*)}val make :
?subject:EmailSubject.t ->
?additionalMessage:NotificationAdditionalMessage.t ->
unit ->
t