This story was originally published on HackerNoon at:
https://hackernoon.com/the-email-problem-that-kills-manda-deals-is-not-the-one-anyone-is-watching.
Email integration failures are quietly derailing M&A deals, creating security gaps, operational chaos, and costly post-close delays.
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Email systems are one of the most overlooked but critical parts of M&A integration. What seems like a simple mailbox migration actually involves identity management, security policies, compliance rules, and years of hidden infrastructure complexity. Delaying email integration creates operational disruption and security exposure, especially during high-pressure post-merger transitions.