I like PayPal, it has a high security standard. Except when I am the one suffering a chargeback for some flimsy reasons.
PayPal might be a bit more popular than Brex. We know about 1 link to it since March 2021 and only 1 link to Brex. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Nerdwallet has a pretty good comparison chart for secured business credit cards. You'll find many of them with cash back rewards, but I haven't seen any with flight rewards though. You can also build business credit with regular credit-that-works-like-debit cards from Brex, Dappr, and several others. Source: about 1 year ago
(I live in USA) When I go to payments under my shopify account to add paypal as a payment method I am having trouble doing so. I first click activate paypal > activate paypal express checkout which directs me to a "security challenge" (confirm I am not a robot). Then it just brings me to paypals website (paypal.com/us/home). When I sign in nothing happens, I am just on my paypal homescreen. Source: about 1 year ago
Mercury - Mercury is banking* for startups
Stripe - Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes. Use Stripe’s payment platform to accept and process payments online for easy-to-use commerce solutions.
Ramp - Grow more. Waste less. Enterprise corporate cards built from the ground up to save your company money: issue unlimited cards and eliminate overspend with our advanced savings reports and 1.5% cash back on everything.
Payoneer - Whether making international payments, receiving funds, managing your digital business, or accessing capital, Payoneer opens your business up to the world.
Wise - Currency exchange Banks and other providers could charge you up to 5% in hidden costs when sending ...
Braintree - An all-in-one solution to accept, process, and split payments in your mobile app or online - from small business to large enterprise.