21 is a startup that initially got attention for developing hardware and software to optimize bitcoin mining. But earlier this month, it (pivoted? expanded? diversified?) into providing a sort of paid email service. (This shift was, of course, predicted by the prophets of old.) With 21, you set a price at which people can send you an email and actually get a reply. (The sender is only charged if you respond.)
Comments
No comments on this item Please log in to comment by clicking here