I am using G Suite for Education. I would like to prevent users from seeing a preview of an attachment in gmail. Many of my users have difficulty understanding or recognizing the difference between opening a downloaded attachment and previewing an attachment in gmail. Is there a setting in the G Suite Admin Console for this?
Note that I am not referring to the big thumbnails that appear at the bottom of the message. I am referring to the preview of the attachment you get when you click on it without downloading it or saving it to Google Drive.