How can you detect unusual sending patterns?

Establish baselines: typical volume, sending hours, recipient geography, and content patterns. Monitoring compares current activity against baselines, alerting on significant deviations.

Specific patterns indicating compromise: sending outside business hours, unusual geographic targets, content unlike previous campaigns, and volume spikes without corresponding marketing activity.

Tools for detection: ESP analytics dashboards, DMARC reporting platforms, custom monitoring using logs, and security tools with email-specific modules. Automation enables detection faster than manual review.