List segmentation
List segmentation is dividing your audience into targeted groups based on shared traits or behaviour — demographics, purchase history, engagement, lifecycle stage — so each message is relevant to who receives it.
Why segmentation works
A single message sent to everyone is, by definition, irrelevant to most of them. Segmentation fixes that by grouping contacts so each group gets mail that fits their situation. The payoff is compounding: more relevant mail earns more opens and clicks, which signals engagement to mailbox providers, which lifts deliverability for everything you send.
Common ways to segment
- Engagement — active openers vs dormant contacts, for cadence and re-engagement
- Behaviour — pages viewed, products browsed, past purchases
- Lifecycle stage — new subscriber, active customer, lapsed, VIP
- Demographics and location — for timing, language and relevance
- Preferences — topics or frequency the contact explicitly chose
How to start segmenting
- Begin with engagement: separate active contacts from non-openers
- Add a lifecycle split so new and loyal customers hear different messages
- Layer behaviour (browsed, purchased, abandoned) for triggered relevance
- Keep segments actionable — each should map to a distinct message or offer
- Combine segmentation with automation so the right group is targeted automatically
Frequently asked questions
Does segmentation shrink my reach?
Per message, yes — but that's the point. Relevant mail to the right segment outperforms a generic blast to everyone, and protects deliverability by keeping engagement high.
What's the simplest segment to start with?
Engagement. Splitting active openers from long-term non-openers lets you mail your best contacts more and quarantine or re-engage the rest, improving results immediately.
How is segmentation different from personalization?
Segmentation chooses who gets a message; personalization tailors the content within it. They work together — segment the audience, then personalize each message for the segment.
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