DND Service

    Plivo provides a “do not disturb” (DND) feature for the US long codes and toll-free numbers. For US short codes, customers can manage opt-ins and opt-outs on their own.

    For long code numbers

    Plivo’s DND feature stops outbound messages from a specific Plivo source number to a specific destination number when the destination responds with certain keywords. For example, if Number A sends an inbound message with any of the keywords listed below to Plivo Number B, then any outbound messages from Number B to Number A will be blocked for a period of three months.

    Opt-out keywords

    • STOP
    • END
    • QUIT
    • CANCEL
    • UNSUBSCRIBE
    • UNSUB
    • STOP ALL
    Note: STOP with trailing spaces and new line characters also triggers the DND block.

    HELP and INFO keywords

    Plivo sends automatic messages to users who send HELP or INFO keywords in an inbound message:

    Text "STOP" to stop receiving any messages from this number. Text "START" to start receiving messages again from this number.

    Opting in

    To opt back in to receive messages from a blocked number, the number that replied with STOP must send one of these keywords:

    Opt-in keywords

    • START
    • YES
    • RESUME
    • RESUME ALL
    • UNSTOP
    • GO

    Once the number replies with any of these keywords, it will again be able to receive SMS messages from the Plivo number that was blocked.

    For toll-free numbers

    A consumer can opt out of receiving messages by texting STOP to the sender’s phone number. The keyword is not case-sensitive and triggers an opt-out only when sent as a single word with no punctuation or leading spaces (any trailing spaces are trimmed).

    Valid opt-out examples

    • STOP
    • Stop
    • stop
    • STop

    Invalid opt-out examples

    • “Hey, can you stop texting me?”
    • “Stop it!”

    Opt-out confirmation message

    An opt-out confirmation message provides instructions on how to opt back in to service:

    You replied with the word "STOP," which blocks all texts sent from this number. Text back "UNSTOP" to receive messages again.

    Opting in

    Anyone can opt back in to receiving messages by texting UNSTOP to a message sender’s phone number. The keyword is not case-sensitive and triggers opt-in only when sent as a single word with no punctuation or leading spaces (any trailing spaces are trimmed).

    Valid opt-in examples

    • UNSTOP
    • Unstop
    • unstop
    • UNStop

    Invalid opt-in examples

    • “Hey can you enable me again”
    • “Unstop me!”

    Message text

    An opt-in confirmation message informs the consumer they can start two-way texting with the message sender’s phone number again:

    You have replied "unstop" and will begin receiving messages again from this number.