/// <summary> /// Sends a single transactional email using send API v3.1 /// </summary> public static Task <TransactionalEmailResponse> SendTransactionalEmailAsync( this MailjetClient mailjetClient, TransactionalEmail transactionalEmail, bool isSandboxMode = false) { return(mailjetClient.SendTransactionalEmailsAsync(new[] { transactionalEmail }, isSandboxMode)); }