You can create a new Email in both of the previous views of the Mail tool. Simply click on the Create Message button. This will open a new window that looks like the one below:
Clicking the To button, will open a window showing all the course participants, select these by clicking on the name. You can select multiple names by using the Ctrl and Shift keys.
The Learn system requires a Subject. Type your email text in the Body and scroll down to attach a file. Click Submit to send your message.