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Segmentation

Segmentation splits an audience into groups that get treated differently: by behavior, purchase history, value, location, or lifecycle stage, so messages match the group instead of averaging across everyone.

Updated August 18, 2026

Why segmentation matters

A message for everyone fits no one: the VIP and the never-bought subscriber shouldn’t read the same email. Segmented sends are more relevant, and relevance shows up in clicks, revenue, and fewer unsubscribes.

Segments stores actually use

  • Lifecycle: new subscriber, first-time buyer, repeat, lapsed
  • Value: top spenders, discount-only buyers
  • Category and product affinity from purchase history
  • Engagement: active openers versus the quiet tail

Questions

How many segments are enough?

Few, at first: lifecycle alone changes most sends. Add segments when you have a genuinely different message for the group, not before; unmailed micro-segments are just database art.

Segmentation vs personalization?

Segmentation writes for groups; personalization adapts within the message per individual. Segmentation is the workhorse; personalization layers on where data supports it.

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