This example gets John's mailbox, and then exports the Transporter object to a file (that is, it creates a serialized .tbin ...

This example gets John's mailbox, and then exports the Transporter object to a file (that is, it creates a serialized .tbin file from the $mail object with a name that is specified in TargetFilePrefix). Finally, the example imports the Transporter data object from the file back to the Transporter object.