The option to send an email as a Word Document is only available in the PowerLabs Required Licensing Model. If the checkbox to send as a Word Document is absent, you are likely using a LabTutor Online Licensing Model.
Reporting Options without Online
Reporting Options with Online
If using LabTutor Online this option is not available - this is because LabTutor Online allows Students to edit at home without the need to send the Report as an external Word Document, keeping everything nicely within the LabTutor package.