To preserve the integrity of communications between you and your customers, there are a grouping of words that will trigger Zingle's built-in blocking. By default, this is how Zingle will handle the following keywords in accordance with industry standards:

  • STOP, STOPALL, UNSUBSCRIBE, CANCEL, END, and QUIT will stop customers from receiving messages from your Zingle service number. Only single-word messages will trigger the block. When a contact uses one of these keywords, and outbound messages to this contact will be blocked. Your contact will receive a message that they have been unsubscribed and will not receive any more texts from your service number.
  • OPTIN, START and UNSTOP will opt customers back in to the messages coming from your Zingle phone number. This action will also remove the block on outbound messages from your service.
  • HELP and INFO will return a message informing the customer that they can use the above commands to control the delivery of messages.


For more information on these settings and additional Opt-In settings, please see this article: Contact Opt-In Settings.

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