By the time I ate breakfast around 8 a.m. Pacific Standard Time (PST) each day over the Black Friday weekend, Twilio Send Grid had already job title email list processed over a billion emails. mails, calculated according to Eastern Standard Time (EST). Looking at the stats, we handled over 16.5 billion emails from Thanksgiving to Cyber ​​Monday, and over 22.3 billion for the week starting the Tuesday before Thanksgiving. These are very good numbers for the company. From the perspective of an engineering organization, doing this without raising alerts or job title email list degrading the customer experience was incredibly satisfying. I recommend you read this blog post, Scaling Our Infrastructure for 4+ Billion Emails in a Single Day , written by my colleague Sara Saedinia, which talks about the importance of running smoothly at this scale for our business and for businesses. who rely on us. Here, I'll focus on our preparations that made the most critical weekend of the year for our email clients the smoothest yet. How did we make this Black Friday weekend go smoothly? Managing our biggest send days requires diligent planning, extensive job title email list region swing testing, dozens of people analyzing data, and tighter feedback loops as we validate improvements to our systems based on telemetry observations. We have even more job title email list automation and improvements that we will be making to ensure that we continue to delight our customers and get the right communications to the right recipients quickly. Understand our business Send Grid's business model requires us to be always up and running - we have no maintenance windows to accept and deliver mail. Our customers demand a reliable service that accepts and delivers mail without interruption. This means that all of our infrastructure changes, both hardware and software, must be made while we continue to process and send emails without any job title email list noticeable delays. The number of emails we process has increased significantly over the past few years, as shown in the following graph. We had our first 1B day in mid-2016, and we had our first 4B day this Black Friday. That is 400% growth in less than 4 years. To accommodate our ever-increasing scale, to job title email list keep our costs manageable, and to provide greater reliability to our customers, we had to redesign and evolve our mail processing pipeline. Black Friday is coming People ask me, "Why are Black Friday and Cyber ​​Monday so important to you?" This Cyber ​​Monday, we processed 45% more emails than the previous year's peak. Black Friday is one of the biggest retail and spending events in the United States. Traditionally, this is the day when retailers will be in the black (net positive) for the year. Email marketing and the use of transactional emails have become essential for all businesses.