Building in-house communications API integrations often becomes inefficient and costly, as teams face challenges such as managing complex integrations across various service providers, ongoing maintenance, and the risk of losing tribal knowledge when developers leave. These projects can distract developers from working on features that directly enhance customer engagement, leading to poor user experiences and increased customer churn. Misconceptions about the finite costs of such projects can result in unexpected, continuous expenses and technical debt, negatively impacting time to market and customer acquisition. Instead of building in-house, companies can choose solutions like Nylas, which offers a streamlined interface for delivering communication features efficiently. Companies like Clio, Nowsite, and CIENCE have benefited from using pre-built APIs to save engineering time, reduce churn, and cut down on resource allocation for integration maintenance, highlighting the advantages of leveraging external solutions to meet business goals.