In version 9 this has become much simpler.

  • Go to Home > People > Staff.
  • Go to More... > Email weekly timetable to FOUND SET

  • Select the Monday date of the week you wish to send the timetable for.
  • The email template will appear, showing the content that was last used. Edit as required.
  • Continue, and each teacher's timetable will be added as an attachment to the email as it is generated.