Email deliverability remains a significant challenge in the realm of mass marketing and sales platforms, with issues often arising from the shared domains and IPs used by services like SendGrid and MailChimp. These platforms, which handle both transactional and marketing emails, suffer from lower deliverability rates due to high bounce and unsubscribe rates associated with mass email campaigns. The Nylas email API offers a solution by sending emails from the user's actual email address and IP, thus improving deliverability rates to nearly 100%. This API not only ensures higher deliverability but also integrates calendar and contact data, making it particularly valuable for applications in relationship management and productivity software, such as CRMs and HealthTech. Unlike SendGrid's send-only API, Nylas allows for comprehensive inbox management, providing features like email analytics, 99.9% uptime, and SOC 2 certified practices, making it ideal for high-value communication needs.