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The thing is, it wouldn't have to cost a lot.

Signal spends $50M a year for about 100 million active users. That's 50 cents per user per year. Or 4 cents per month :) Even with a bit of profit it's still nonsense money.

And 6 million of that alone is going up in sms validation because they insist on using mobile numbers as an identifier. They could save that if they used other methods.





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