https://community.t-mobile.com/plans-and-services-36/terms-of-service-pilicy-change-and-fines-against-customers-54984 Looks like a few have called and found that this isn’t true. From…Reddit…. Please disregard this because it is a B2B bulk provider interoperability contract agreement between bandwidth.com and t-mobile, not a t-mobile subscriber agreement. (also because laura is an idiot who can't formulate a hypothesis correctly based on reading very small amounts of unrelated information to what her theory is) Bandwidth.com provides SIP and messaging services. To send messages to cell providers, there needs to be an interop gateway, T-Mobile is essentially stating that marketing (shortcode and 10-digit-longcode) messaging and such are prohibited from being spammy. They will fine the service provider a lot of money (which a service provider has) if they are ineffective at stopping spam. Please read this: https://www.t-mobile.com/support/plans-features/consumer-versus-non-consumer-text-messaging This is decidedly "non-consumer" and links to the Code Of Conduct right in the middle of the page. [Edited to add: I should also say that being an MVNO, the subscriber utilizes Verizon's and T-mobile's own messaging systems, so there is no sort of interop gateway needed between USMobile and other carriers. This agreement is only for bulk third party senders of messages. Like "text CRAP to 555321 to save on your car insurance!" or the SMS votes you can do for like TV shows to vote an audience winner for American Idol if that still happens]