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Research notes

Prospecting methods, controls, and measurement

2026-09-15 · Julian Hartwell

Make a Subject Line the Body Can Keep

Learn how to write a cold-email subject line that states a truthful reason to read, matches the body, and supports useful testing without chasing empty ope

2026-09-14 · Julian Hartwell

New Lead Generation Needs a Learning Budget

Test a new audience or motion with explicit assumptions, limited exposure, reviewable evidence, and a decision to stop, revise, or operationalize.

2026-09-11 · Julian Hartwell

Build Accountable Cold Email Conversations

Use 2026 cold-email strategies that combine relevance, sender requirements, controlled personalization, human review, and qualified-conversation metrics.