How to Write Email Subject Lines That Get Opened

By Abe Node
March 16, 2026

Table of Contents

Your subject line makes or breaks your email

A great subject line gets 40-50% open rates. A bad one gets 5-10%. Here are the formulas that work.

The Formulas That Work

  • Curiosity: “This is why 90% of founders fail”
  • Benefit: “Get your first 10 customers in 30 days”
  • Question: “How did this founder go from $0 to $100K?”
  • Scarcity: “Only 5 spots left”
  • Breaking News: “New algorithm change affects your rankings”
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