The support of modern technologies like React for email building and Serverless for sending emails is crucial to make email feel like the web. A 40-year-old protocol, SMTP, still remains a standard protocol underlying the 347 billion emails sent every day due to its provider agnosticism, allowing integrations to be based on the protocol rather than a specific email API. This has led to the realization that SMTP is not something to avoid but rather something to embrace for legacy systems and modern frameworks alike, enabling quick and standardized ways for customers to send emails.