System administrators now have the ability to enable My files sharing separately from My files via System admin > System settings > My files settings:
This allows users to use the Send a file feature from the Dashboard and Outlook plugin, without the full My files and HighQ Drive capabilities.
Within the My files drop down menu, click OFF.
And now, in the Enable My files sharing drop down menu, select ON for all system users:
Click Save. The system is now set up to have 'My files' disabled, but you can still send a file.
Click My files within your profile settings to display the My files screen:
Here, 'My files' is effectively turned off and the tree in the left hand pane has been disabled, but you can still send a file by clicking Send a file.
The Send a file screen is displayed:
From here, you can send a file as you normally would.