Email security - Block emails by content with blocked content rules
UpdateUnverifiedAdded Sep 24, 2026
Cloudflare Email security now lets administrators write their own content-based blocking rules. A new Blocked content area under Policies & rules lets you define a plaintext string or a regular expression, choose whether to scan the message subject, body, or both, and automatically block any message that matches.
Topics: Governance, Security
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Also shipped on Aug 12, 2026
Cloudflare in August 2026
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