This parameter contains the No Mail Option select character that is present on the logon panel. You can use this parameter to supply a different No Mail Option select parameter to the logon panel. The maximum length of this field is one byte. The only allowable values are the character 'S' and ' '. The session receives previously saved mail from the SEND command during logon processing if this option is ' '. The session does not receive previously saved mail from the SEND command during logon processing if this option is 'S'.