What do you mean by unsubscribing back to t?

Unsubscribe back to T means that if you don't want to receive such information, you can reply to the letter T to cancel.

The relevant state departments require that SMS advertising push must provide users with unsubscribe function, and unsubscribe is a shielding word in SMS, so it is not a reply of unsubscribe, but a T or TD. T is the pinyin initials of tui, and TD is the pinyin initials of tui and ding. If the mobile phone user receives the content of the marketing short message group and feels harassed, as long as he replies to T, the operator will reply the mobile phone number of the mobile phone user quickly, and there will be no similar information in the future.

SMS is a kind of mobile phone service. Text or digital information directly sent or received by users through mobile phones or other telecommunication terminals is translated from English short message service. Sometimes it is also called information, short message, short message, short message, etc.

The history of short message invention

The inventor of mobile phone short message is Finnish. Because Nordic people are sensitive and don't like to express by phone, they invented short message on a whim. Some people on the Internet say that the inventor of SMS is Marty Cooper, an American who works for Motorola, but he invented the mobile phone, not SMS.

1992, Acision company introduced the first short message service center system to the market. Initially, its design purpose was mainly to investigate and improve the reliability of the developing mobile phone market, and then Telenor, a local Norwegian telecommunications company, became the first signing company of SMSC.