The title heavily implies that Mozilla's is closed-source. It isn't: https://github.com/mozilla/send
Actually since it says forked it implies that Mozilla maintains a closed-source version. No, it was cancelled.
replies(2):
Actually since it says forked it implies that Mozilla maintains a closed-source version. No, it was cancelled.
"The Thunderbird team was very sad when Firefox Send was shut down. Firefox Send made it possible to send large files easily, maybe easier than any other tool on the Internet. So we’re reviving it, but not without some nice improvements. Thunderbird Send will not only allow you to send large files easily, but our version also encrypts them" - https://blog.thunderbird.net/2024/10/thunderbird-annual-repo...
https://web.archive.org/web/20200226024845/https://www.wired...