Email is a crucial tool for business communication, facilitating the exchange of vital information among employees, customers, and partners. As the volume of emails sent and received daily exceeds 300 billion, ensuring effective email deliverability—where emails successfully reach recipients' inboxes—is essential for maximizing the return on investment from email campaigns. Deliverability issues often arise from emails being flagged as spam or bounced, significantly impacting customer engagement and brand perception. For instance, marketing professionals often face challenges with deliverability, with many reporting inbox placement rates of 89% or lower. Factors influencing deliverability include spam-blocking measures by internet service providers, the use of shared IP addresses by mass email services, and the content of the emails themselves. Companies like Nowsite have struggled with poor deliverability, despite substantial investments in solutions, until implementing the Nylas Email API, which enhanced deliverability to nearly 100% by allowing emails to be sent directly from users' own addresses. Nylas provides a comprehensive solution by integrating native email functions, offering analytics, maintaining a high uptime, and adhering to stringent security standards, ultimately improving user engagement and reducing churn.