Exchange Online Protection:: EOP

in plain english

The baseline email security layer in every Exchange Online plan — anti-spam, anti-malware, basic phishing filtering, and zero-hour auto-purge (ZAP) for email already delivered.

official microsoft definition

A cloud-based filtering service that helps protect organizations against spam, malware, and other email threats. EOP is included with any Microsoft 365 plan that includes Exchange Online mailboxes.

plans & eligibility

• Included in every Exchange Online plan
• Standalone EOP available for hybrid/non-EXO deployments

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