A publisher performance metric calculating the revenue generated per one thousand impressions, page views, or email subscribers in an affiliate or advertising context — expressed as total revenue divided by audience size in thousands. RPM provides a normalized performance benchmark that enables comparison across publishers of different sizes and across different content formats. RPM calculation: (Total Revenue ÷ Audience Size) × 1,000. A publisher earning $500 from 25,000 email subscribers has an RPM of $20.00. Applications in affiliate marketing: Email co-marketing valuation: brands evaluating co-marketing partnership value use email RPM to estimate expected revenue per promotional placement; benchmarking against historical RPM from similar promotions to similar audiences provides a basis for negotiating flat fees or evaluating revenue share terms. Publisher performance comparison: comparing affiliate revenue RPM across publishers of different sizes allows normalized performance comparison (a publisher with 10,000 subscribers generating $40 RPM outperforms a publisher with 100,000 subscribers generating $8 RPM on a per-audience-member basis). Content format comparison: comparing RPM across content formats (newsletter feature vs. standalone review vs. social post) helps publishers and brands understand which content investment generates the most revenue per audience exposure. RPM benchmarks vary widely by category (luxury goods generate higher RPM than commodity products), audience quality (high-purchase-intent audiences generate higher RPM), content format (dedicated email sends generate higher RPM than banner ads), and promotional offer quality (strong first-order incentives generate higher RPM than standard offers).
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