What problem does it solve? Cold email campaigns fail not from lack of tooling but from inconsistent operations. This Skill provides a fixed operating schedule so deliverability audits, reply handling, inbox rotation, and experiment reviews actually happen on time, every time. ## Core Features & Use Cases - Calendar-Based Cadence: Prescribes six recurring calendar events covering Monday deliverability audits, Wednesday positive-reply sweeps, Friday campaign retrospectives, biweekly inbox rotation, monthly spam placement tests, and quarterly experiment reviews. - Decision Frameworks: Each task includes concrete thresholds and actions, such as the 1% reply-rate rule, 2% bounce-rate pause trigger, and 85% inbox placement target. - Experiment Logging: Defines a structured JSON logging format for campaign retrospectives that feeds quarterly reviews and future experiment design. - Use Case: A growth operator with live Smartlead campaigns uses this rhythm to catch a deliverability drop on Monday, respond to warm leads within minutes on Wednesday, and kill underperforming campaigns on Friday based on 21-day reply-rate data. ## Quick Start Set up the six recurring calendar events from the rhythm table, then run the Monday deliverability audit on my active cold email campaigns.