System administrators now have the ability to enable My files sharing separately from My files via System admin > System settings > My files settings:
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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.
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And now, in the Enable My files sharing drop down menu, select ON for all system users:
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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:
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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:
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From here, you can send a file as you normally would.