Send one RCPT TO command
[Visual Basic] Function RcptTo( _ ByVal rcptto As EmailAddress _ ) As SmtpResponse [C#] SmtpResponse RcptTo( EmailAddress rcptto ); [C++] SmtpResponse* RcptTo( EmailAddress* rcptto ); [JScript] function RcptTo( EmailAddress rcptto ): SmtpResponse;