During a year marked by significant change, including the COVID-19 pandemic, email has become an essential connection between businesses and their customers, with engagement increasing by 200%. Twilio SendGrid played a crucial role in reliably processing over 1 trillion emails, a feat that would line up end to end for 173 million miles. This milestone was made possible by customers like DonorsChoose, PetDesk, and Luma Health, who built email programs with Twilio SendGrid to engage their user-base and deliver critical information. These organizations leveraged the flexibility of Twilio SendGrid's Email API to personalize their experiences, automate promotional emails, and scale their sending capabilities, resulting in significant increases in engagement and open rates. As companies continue to grow and send millions of emails, it's essential for senders to implement strategies like IP warmup to ensure reliable delivery, making Twilio SendGrid a trusted partner for businesses looking to build and optimize their email programs.