Firefox Send is a free encrypted file transfer service that allows users to safely and simply share files from any browser. Firefox Send uses end-to-end encryption to keep your data secure from the moment you share to the moment your file is opened. The recipient of files sent through Mozillas system does not need to do anything special, he just need to click the provided link to download the files. There is a limit how many times the files can be downloaded, which will discourage the possibility of pirates using the service.”]
Source: https://hackercombat.com/firefox-send-set-to-reform-the-file-transfer-service-market/