You would need close to 90k customers to get $35M revenue as they claim.

90 thousand customers sounds like a whole lot of users to me.

I use it myself and it is by far the best email experience ever created. Is it worth the money? That depends on your needs and work, I guess. CEOs laugh at the cost. Developers might think the price is nuts.

Those are some of the best customers to have in case your business is under threat and you might need a bailout (M&A) in the future.