Firefox Send, the Mozilla encrypted file exchange service, came out of beta and is no longer an experiment. The service allows you to send download links that are set to expire automatically after a certain period of time, or after a certain number of people have downloaded them. You can also set an additional password before a recipient can download a file.
By having this control, Mozilla argues, it makes Firefox Send a much better option to share files or confidential documents. However, setting limits on the number of downloads will not prevent people from making copies after they have downloaded, so a certain amount of common sense should still be used when sending something particularly sensitive.
Firefox Send is available now, and is available independently of browser. You can send up to 1 GB of files by default, but 2.5 GB of capacity are available if you register to obtain a free Firefox account. In addition to its online portal, Mozilla is launching an Android application in beta to allow you to share files while on the move.