Segmentation is the practice of sending the right message to the right people instead of the same message to everyone. It is foundational to modern email marketing and campaign management. Every benchmark study shows that segmented emails get higher open rates, higher click rates, and lower unsubscribe rates than unsegmented sends.
Common segmentation criteria include demographic attributes (industry, company size, job title, geography), behavioral signals (email engagement, website visits, content downloads), lifecycle stage (lead, MQL, customer), and engagement recency (active in last 30 days, 60 days, 90 days, or inactive).
For MOps teams, segmentation is both a strategic and technical skill. The strategic side involves deciding which segments to create based on campaign goals and audience insights. The technical side involves building the lists, smart lists, or dynamic segments in your MAP and maintaining them as your database changes.
Dynamic segments (sometimes called smart lists in Marketo or active lists in HubSpot) automatically update membership based on criteria. Static lists require manual updates. For most use cases, dynamic segments are preferable because they stay current without ongoing maintenance.
The most impactful segmentation for email operations is engagement-based. Segmenting your database by recency and frequency of engagement allows you to send more aggressively to engaged contacts and less frequently to disengaged ones. This protects sender reputation while maximizing the value of your engaged audience.