Topic starter
27/06/2026 1:21 pm
TL;DR: Microsoft and secure email gateways overlap on redundant features, creating avoidable cost and operational drag for teams that need to save money and time, according to Abnormal AI. The real decision is not whether to add more controls, but which duplicated email-security functions can be consolidated without widening the attack surface.
Editorial analysis by NHI Mgmt Group, based on content published by Abnormal AI: “Doing More With Less in 2024: Refreshing Your Email Security”.
Key questions
Q: Where do Microsoft and secure email gateways fail in practice?
A: They fail when both layers cover the same functions but no one can explain which control is responsible for blocking, quarantining, or escalating threats.
Q: Why does duplicate email filtering create more risk than value?
A: Because duplicate controls often produce duplicate alerts, duplicate tuning work, and duplicate assumptions about coverage.
Practitioner guidance
- Map duplicated email controls Inventory Microsoft-native protections and SEG functions side by side, then mark every capability that produces the same outcome twice, such as filtering, quarantine, or policy enforcement.
- Measure control value by distinct coverage Assess whether each email-security layer adds unique protection against phishing, impersonation, or payload delivery, rather than counting features that overlap across products.
- Rationalise before you expand Remove redundant enforcement paths before introducing new email-security tooling so that analysts can see which control is responsible for each outcome.
Bottom line: Microsoft and SEG overlap can turn email security into a duplication problem, where the organisation pays twice for similar controls without clearer protection.
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This topic was modified 3 days ago by NHI Mgmt Group
27/06/2026 2:41 pm
Control duplication, not control shortage, is the dominant email-security governance problem in this discussion. When Microsoft and secure email gateways cover the same functions, the real risk is paying for parallel enforcement that no one fully owns. That weakens operational accountability and makes it harder to judge whether the stack is actually improving detection or only increasing overhead. The practitioner takeaway is to treat overlap as a governance defect, not a feature bonus.
A question worth separating out:
Q: How should teams decide which email security controls to keep when Microsoft and an SEG overlap?
A: Teams should keep the control that provides measurable coverage for the threats they actually face and remove duplicated enforcement where two tools do the same job. The decision should be based on detection quality, maintenance overhead, and incident outcomes, not on how many layers feel safer. A simple stack with clear ownership is usually easier to govern than a duplicated one.
👉 Read our full editorial: Refreshing email security stacks: where Microsoft and SEGs overlap
This post was modified 3 days ago by NHI Mgmt Group