From Traffic Jams to Green Lights: Faster, Smarter Messaging with Twilio’s Traffic Optimization Engine

Twilio is launching its Traffic Optimization Engine (TOE) on October 31, 2025, to enhance message delivery efficiency by replacing the legacy Account-Based Rate Limits (ABRL) for U.S. Short Code and Toll-Free traffic. This new system acts like a smart traffic controller, optimizing message routing in real-time to ensure that essential communications are prioritized during peak times, such as Black Friday. By segregating traffic by carrier, TOE prevents a slowdown in one network from affecting others, enhancing throughput by up to 50%. Additionally, the Deliverability Score in Messaging Insights allows users to monitor performance against industry benchmarks, identifying and resolving potential issues proactively. The transition to TOE signifies a shift towards continuously optimized, real-time messaging at a global scale, ensuring that crucial messages reach their destinations without delays.

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