I will say, for what it’s worth, that the customer experience of using Brex is really quite outstanding (my current startup is a customer.)<p>They’ve figured out things that in hindsight just seem so obvious to a good UX, and yet we’ve all been so trained to have low expectations from the mediocre service traditional banks/corporate card providers offer that it seems outstanding.<p>From limited experience - the fact that virtual cards are first-party citizens, the helpful text messages you get (which include a warning the first time you use a card physically, instant text records when you use a card physically, the ability to photograph receipts and send them back to that same text phone #, and and and.)<p>American Express (my only other corporate card comparison) of course _could_ offer this stuff, but it’s just not in their DNA because, well, they haven’t had to innovate because they had what amounts to a monopoly on corporate spending cards. And I should note - Amex ties the credit on those cards to the founder (requiring a personal guarantee until the company reaches a certain - large - size.)<p>Anyway, this is all to say I’m a fan and it doesn’t surprise me they’ve having the success they are so far. Let’s hope they can do it profitably and keep it up!