What does the message mean to unsubscribe back to T D?

indicates that you don't want to receive this kind of information, and TD is the pinyin initials of tui (ding).

in the past, the push SMS didn't take TD to unsubscribe. It should be that the relevant state departments required that the SMS advertisement push must provide the unsubscribe function to users, and that unsubscribe is a shielding word in SMS, so it is not a reply to unsubscribe, but TD.

If you really reply to TD or something else, the content that the system replies to you is unusual, then you should be vigilant and don't come back. Because it may also be a means of fraud. Maybe after replying "Cancel+Verification Code" according to the prompt, the funds on Alipay and bank cards were swept away within half a day.

Extended information:

After replying to td, you will no longer receive the information from this number. If it is a value-added service, you will unsubscribe from the service, such as canceling the corresponding traffic package.

Generally, mass texting is one of the promotion methods of enterprises and businesses, but sending too many short messages will always cause the recipients to resent being complained, because dao, a regular short message sending company, will add "unsubscribe to T" at the end of some marketing short message sending content, which means that if you don't want to receive such short messages, you won't receive them for the second time after replying.