Email is one of those systems that feels deceptively simple — until the invoice arrives. For us, sending daily newsletters to roughly  1.5 million users  through a  leading customer engagement platform  was costing close to  $200K per year . The platform worked well, but when we broke it down, the core workflow was straightforward: Store content → choose an audience → send email → track engagement We already had: A  leading analytics / CDP platform  for user data, segmentation, and reporting A mature  React-based product ecosystem An internal editorial workflow So we asked a simple question: What if we owned the pipeline and only paid for the pieces we couldn’t — or didn’t want to — build ourselves? A year later, we send the same volume on an in-house platform for  ~$50K per year , saving  ~$150K annually , while retaining everything that actually matters: segmentation, scheduling, analytics, and a solid editor experience. Here is...