Under the new A2P 10DLC service for sending messages via 10-digit long code numbers in the United States, there are changes to how message sending throughput is allocated. A2P 10DLC message throughput in the US will now be determined based on your Trust Score and your Use Case (“Campaign”) type. This guide gives an overview of these changes, and how throughput is allocated.

Link for more info https://support.twilio.com/hc/en-us/articles/1260803225669-Message-throughput-MPS-and-Trust-Scores-for-A2P-10DLC-in-the-US

Throughput overview

Message sending throughput for SMS is measured in message segments per second (MPS). Each message segment consists of up to 160 GSM-7 encoded characters, so an SMS with more characters and/or different character encoding can be comprised of multiple segments. For full details, see What The Heck Is A Segment (Twilio Blog).

In the past, Twilio’s MPS for US long code numbers was set at a standard 1 MPS per number, shared across all mobile carriers. This rate is changing under the new A2P 10DLC service. Going forward, MPS throughput will be determined based on the sender's Trust Score, and the messaging Campaign type (use case).