That is, who's paying for the server storage and the bandwidth?
I remember sending a signed PDF via Firefox Send and was at first horrified when I realized I couldn't get the file back after 24 hours but then relieved knowing that the recipient got it and then it disappeared from the internet. Very cool!
If this were on AWS it would be around $0.09 per GB for downloads.
From this it seems that their moneymaker is the new Firefox account creations that will be driven by this service, to whom they can then upsell. But it doesn't state what they are trying to upsell. Anyone got any idea what that might be?
If you already have a Firefox account, the barrier to using Firefox Sync is lower, and with that, the barrier to using Firefox for Android/iOS is lower.
Secondary - In support of Revenue KPI
We believe that a privacy respecting service accessible beyond the reach of Firefox will provide a valuable platform to research, communicate with, and market to conscious choosers we have traditionally found hard to reach.
We will know this to be true when we can conduct six research tasks (surveys, A/B tests, fake doors, etc) in support of premium services KPIs in the first six months after launch.
Of course Mozilla's not in it for the money, so there's not a direct line from Send to more revenue. Firefox is their main tool to protect the open web, and Send is a way to get more people to use that. And of course, being able to send files encrypted is good for the web as well.
Indirectly, it is primarily financed by the search engine deal in Firefox.