How is an incoming message delivered to my application?

An inbound message is categorized in two distinct stages: received and delivered/undelivered.

1. Received

Plivo receives an inbound message from a carrier. The user is charged for the inbound message. If the message_url or message_method is not configured in the user’s application to the number that receives the message, the message remains marked as “received.”

2. Delivered/Undelivered

Once Plivo receives the message, it sends a callback to the message_url. Based on the response Plivo gets, the message gets recategorized as either delivered or undelivered.

  • Delivered: the message_url is valid and active. After sending a callback to the message_url, the state of the message is set as ‘delivered’.
  • Undelivered: the message_url is invalid, inactive, or not responding. Plivo will retry callbacks for the next 24 hours. Please check this guide for retry interval timings. If all callbacks fail, the status of the message will be set as ‘undelivered’.
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