이메일 마케팅 ROI 대시보드

Design an email marketing performance dashboard for [companyName] that tracks ROI and optimization opportunities. Define: 1) Primary metrics (revenue per email, conversion rate, list growth rate, engagement rate), 2) Diagnostic metrics (open rate, click rate, bounce rate, unsubscribe rate, spam complaints), 3) Segmented performance views (by campaign, audience segment, automation), 4) Cohort analysis for lifecycle value, 5) Attribution modeling (first-touch, last-touch, multi-touch), 6) Benchmark comparisons for [industry], 7) Actionable alerts and recommendations, 8) Reporting templates for stakeholders. Show how to calculate true ROI considering all costs and demonstrate email's contribution to [companyName]'s overall marketing goals.