UIMailConversationContext.MailEntry.Kind.transaction The email is related to a purchase or transaction. Declarationcase transaction See AlsoKinds of emailUIMailConversationContext.MailEntry.Kind.newsUIMailConversationContext.MailEntry.Kind.noneUIMailConversationContext.MailEntry.Kind.personalUIMailConversationContext.MailEntry.Kind.promotionUIMailConversationContext.MailEntry.Kind.social