Twilio SendGrid and Messaging teams successfully delivered over 55 billion messages during Cyber Week 2022. The messaging team forecasted volume, determined product fit for advanced throughput products, partnered with carriers to scale infrastructure, and engaged with top customers on throughput allocation. They also refined their approach to throughput management, moving away from sender-based throughput to account-based throughput. The email team prepared for high volume by forecasting and best practices, deliverability and send time optimization, testing and repetition, and analyzing metrics such as median end-to-end time, open rates, and subject line performance. To prepare for 2023, Twilio recommends deep diving into throughput, getting compliant with messaging regulations, and better sending habits and data analysis.