Many people think that it’s illegal to send money by mail, but that’s not true. The law only prevents illegal activities such as money laundering or mailing cash to defraud the tax man. You can send any amount of cash through the U.S. Postal Service, but USPS will insure currency only up to $50,000.
Is it better to exchange money in US or Mexico?
Any exchange rates in Mexico have been significantly better than getting pesos where we are in the US. US $100 bills are the currency of drug money and counterfeiters. Banks, even in the US, can be suspicious of them.
Does USPS do currency exchange?
Post offices tend to offer similar services, too. You can also order currency online through foreign exchange providers. These companies provide currency exchanges and international payments through in-store pick-ups or mail delivery.