An outdated or inadequate email gateway can leave organizations exposed to growing cyber risks. Warning signs include missing smart threat intelligence that combines multiple data sources, excessive spam getting through due to poor tuning, and high costs from pricey upgrades like Microsoft Defender for Office 365 E5 licenses that may not deliver full value. Gateways also need engines specifically designed to block targeted attacks such as business email compromise, along with strong defenses against sophisticated phishing campaigns that bypass end-user detection. Finally, costly advanced features for data loss prevention and compliance should be balanced with practical, cost-effective options.

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