Firefox Send, the encrypted data transfer service from Mozilla, came out of the beta phase today and is no longer an experiment. The service allows you to send download links that expire automatically after a period of time or after a certain number of downloads.
Also, users can enter a password before the recipient downloads a file.
By providing this control, Mozilla says Firefox Send is a much better solution than other alternatives for disseminating sensitive data and documents. However setting limits on the number of downloads will not prevent anyone from creating a copy of the downloaded file.
For this reason, it is not an obstacle for those who want to copy and share sensitive data.
Firefox Send is now available from any browser. You can send up to 1GB while running up to 2.5GB if you sign up for a Firefox account.