Nylas is transitioning from its API v2 to the newly launched API v3, which will officially replace the former on October 1, 2024, with an extended migration deadline of December 31, 2024, upon request. API v3 is designed to enhance product performance, developer experience, security, and intelligence, offering 2.5 times faster speeds and ten times greater reliability than its predecessor. This transition introduces a redesigned sync-engine model that optimizes performance and security by eliminating the need to store data with Nylas. Key features include simplified integrations, instant email and event functionality, AI-driven tools like Scheduled Send and Smart Compose, and new endpoints for organizing email threads. Nylas provides comprehensive resources, including documentation, webinars, and personalized support to assist customers in migrating smoothly and efficiently. This upgrade reflects Nylas's commitment to innovation, scalability, and meeting the evolving needs of its users.