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I don't know of countries that mandate a minimum price. If you are doing high volume you are free to work directly with carriers. If you are drawing as much billable traffic as you are sending, then that could even be a wash.

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It’s not countries mandating a minimum price (although regulators often impose a maximum), but the carriers themselves.

> If you are drawing as much billable traffic as you are sending

SMS verification traffic is usually unidirectional, so that’s very unlikely to be the case.

Yes but in this case we are describing old-school Twitter, in which people made their tweets via SMS. That's why it was easier for them to make these deals.

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