foldername

    Indicates the name of the folder to which the message is to be
    copied. If the specified folder does not exist (and you have
    not entered the qualifier /NOCONFIRM), Mail asks if you want to
    create it. If you respond with Y, Mail creates the new folder. If
    you specify /NOCONFIRM, Mail creates the folder and displays the
    message: %MAIL-I-NEWFOLDER, folder foldername created

    A folder name can be 1 to 39 characters in length. Valid
    characters for folder names are alphanumeric characters, dollar
    signs ($), and underscores (_). If your folder name contains
    lowercase letters, spaces, or special characters, the folder name
    must be enclosed in quotation marks (" ").

 file-spec

    Indicates the name of the mail file to which the message is
    copied. If the specified mail file does not exist, Mail creates
    it. If you do not specify the /NOCONFIRM qualifier, Mail
    asks if you want to create the file, but creates the folder
    automatically. If you omit the file name, Mail copies the message
    to the specified folder in the current file.