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Insights & Ideas

The Journal

Strategies, case studies, and insights from the trenches of growth marketing.

Email Subject Line Testing at Scale with GPT
EmailOctober 30, 2025

Email Subject Line Testing at Scale with GPT

Generate and test hundreds of email subject line variants using GPT-4. Learn the framework for systematic testing, statistical analysis, and 3x open rate improvements in 30 days.

Marketing AI Stack: Your 90-Day Build Plan
StrategyOctober 20, 2025

Marketing AI Stack: Your 90-Day Build Plan

Build a production-ready marketing AI stack in 90 days. Covers tool selection, prompt workflows, integrations, and team rollout. No fluff, just the plan.