2026-09-25
Newsletter Growth Notes: September's Honest Numbers
Not financial advice. Verify claims independently.
List growth, open rates, and the one subject line that outperformed everything.
September newsletter numbers:
- List growth: +22% MoM — the affiliate case study drives subscribers (people want the receipts)
- Open rate: 41% — the industry benchmark is ~25%; niche + useful content holds attention
- Best subject: "Micron Wednesday: the $50B print" — timely + specific + numbers
- Worst subject: "This week's affiliate tips" — generic, low intent
The formula that works: specific event + specific number + "here's what I'm doing about it." The Stock Picks affiliate angle rides the same principle — specificity sells, genericity gets deleted.
Put it into practice
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