In order to share uploaded files you must first generate a public sharing link that you can disable at anytime.
How to share a file:
1.) Login to your PrivateMail account and select Files. Click the file you want to share and then click the link icon:
2.) Copy the public link and share with those who should have download access:
3.) Stored files that are being shared publicly have the link icon. To disable and remove the public link first click the link icon on the file:
4.) Click the Remove link button to disable public sharing with the selected file: