T-Mobile: Double Opt-In No Longer Required

[blogger]

T-Mobile: Double Opt-In No Longer Required
      

T-Mobile has decided, effective immediately, that it will no longer require marketers and other senders of commercial, non-premium SMS to have double opt-in for their subscribers.
Double opt-in, in case you don’t know, is the process in which a marketer ensures that a subscriber really did mean to sign up to receive marketing SMS messages. Usually (including [...]
         

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