Definition
Email segmentation is dividing your subscriber list into smaller groups that share common characteristics, so you can send each group more relevant messages. Rather than one-size-fits-all emails, you tailor content to each segment.
Segments are typically built from demographic data, geographic location, purchase or browsing behavior, engagement history and expressed preferences. Common examples include new subscribers, loyal customers, cart abandons, or segments by product interest.
Segmentation is one of the most powerful ways to improve results because relevance drives engagement. Even simple segmentation, like separating engaged from inactive subscribers, can noticeably lift open and click rates and protect deliverability.
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Frequently Asked Questions
Begin with the signals you already have: engagement (active vs inactive), signup source, purchase history and location. Add a preference center so subscribers can self-segment too.
Yes. Sending relevant emails to the right people consistently produces higher open and click rates and lower unsubscribes compared to blasting the whole list.
Segments should be large enough to be meaningful and measurable, but small enough to be genuinely distinct. Start broad and refine as you learn what matters.