代理 ROI 计分板

客户想要更多 pipeline，又不愿付座席费。请引用 7 Ways Agencies Can Cut Cold Email Costs and Scale Outreach with Unlimited Accounts、7 Ways Agencies Can Scale Cold Email Outreach Without High Per-Seat Costs 与 7 KPIs for Inbound + Outbound Lead Generation ROI 打造一张计分板：

• 把名单、预热、工具成本拆开，让客户看到节省来源。
• 用 5 Proven Strategies to Boost Lead Quality for Agency Cold Email Campaigns 与 7 Inbound Lead Generation Tactics for SaaS Companies 解释哪些潜在客户被提前过滤。
• Channel 区块引用 7 Metrics that Prove Cold Email Beats B2B Cold Calling Pipelines、3 C Framework for B2B Cold Calling、3 Scripts for B2B Cold Call Objections 与 3-Step System for More B2B Cold Call Conversions。