MercadoLibre built its own cash escrow to enable payments

MercadoLibre launched its online marketplace across Latin America in 1999, but the region it was selling into had none of the payment infrastructure an e-commerce marketplace normally depends on: card penetration was low, a large share of the population was effectively unbanked, and even among those who did have a card, cultural skepticism about handing money to an anonymous stranger over the internet ran deep, with peer-to-peer fraud a real and reasonable fear.

A buyer and seller who had never met, transacting through a website, had no shared institution either could trust to guarantee the other side would follow through — the seller worried about shipping goods with no payment guarantee, and the buyer worried about paying with no guarantee of receiving anything back.

In November 2003, MercadoLibre launched Mercado Pago not as a separate fintech venture but as the payment rail its own marketplace needed and couldn't find anywhere else. Rather than wait for the banking sector to raise credit card penetration, Mercado Pago built an escrow system anchored in cash and local agents: a buyer without a card could deposit cash at a local agent, and only once that deposit was confirmed did the system instruct the seller to ship the goods — meaning neither side had to trust the other directly, only the intermediary both trusted. That structure let MercadoLibre's mark