That is very neat!

That said, I think a lot of the value of Firefox Send, which I used a bunch, was that it was maintained by a trusted brand in Mozilla. Indie groups won't have that reputation. And if I wanted to self-host, I would just use magic-wormhole.

Definitely. But many still use it, partially because of `ffsend` (https://github.com/timvisee/ffsend), so it's nice to have around.

Do you have any problem with spam? Afaik that was one of the main issue why Mozilla shut down the service originally, it was _too good_

Not that I know of. Got a DMCA only once.

Mozilla's instance was obviously associated with the big names 'Mozilla' and 'Firefox' which made it easy to abuse. That isn't an issue now. I guess that helps.

The Mozilla one was being used to deploy malware, so you should watch out for that in advance. Frankly, I don't know how though, and I think Mozilla couldn't figure it out either -that's why it was shut down instead of fixed