Email segmentation is getting tighter. Here's what our 2025 research found and what we changed going into H2 2026.


We cover implied consent windows, why we pulled back from 150-day open segments to 120, the real revenue math on long buyer lookbacks, and how to structure a mailable segment that sits inside every other segment you send to.


Key topics:

  • Implied consent: 95-day default vs. the legal maximums
  • Why 150-day open windows caused inboxing problems on some brands
  • Long buyer lookbacks: the $400 on $14,000 reality check
  • Engaged vs. unengaged within mailability
  • First-time vs. repeat buyer segmentation and why it matters for sustainable revenue
  • How to add implied consent directly into existing segments
  • This is the internal lifecycle update Pilothouse publishes before every H2. The direction for 2026: tighter than 2025, across the board.


0:00 - What's required to inbox

2:51 - 2025 segmentation research overview

3:50 - Implied consent windows explained

5:16 - Open window: why we stayed at 120 days

7:15 - Where 85% of campaign revenue comes from

9:15 - Long buyer lookbacks: what the data showed

13:49 - How to establish mailability as your foundation

16:45 - First-time vs repeat buyer segmentation

20:27 - Using segmentation to learn about your business


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