Your next campaign should not automatically go to every marketable profile.
Build an engagement ladder that moves people from active intent to warm, cooling and dormant. Send most frequently to the strongest signals, reduce campaign eligibility as those signals weaken, and reserve reactivation for subscribers who have stopped responding.
The important part is not copying a universal 30-, 60- or 90-day rule. Your windows should reflect how often you send, how often customers buy and which signals you can trust.
One “engaged” segment is not an operating system
Most ecommerce accounts have an engaged segment. Fewer have a clear rule for what each level of engagement is allowed to receive.
That difference matters. A segment can tell you who did something. An operating ladder tells you what to do next.
Klaviyo recommends varying cadence by engagement track: engaged subscribers receive more frequent campaigns, while older or weaker engagement is contacted less often. Its current reference also recommends a sunset or re-engagement effort before suppressing profiles that remain inactive.1
The four-tier engagement ladder
These are operating categories, not fixed industry benchmarks. A replenishment brand and a furniture brand should not use identical windows. That would be tidy. It would also be wrong.
Tier 1 · Active intent
These people are showing recent commercial behaviour: clicking a campaign, browsing a product, starting checkout or purchasing recently enough that a follow-up is relevant.
Eligible for the broadest cadence—but not automatically every send. Ask what they did that makes this message timely.Tier 2 · Warm
Warm profiles still have a credible relationship with the brand, but their current intent is less obvious. They may have clicked in a broader window, purchased before or joined recently without taking deeper action.
Give them the dependable core of the calendar: launches, useful education, meaningful offers and product stories.Tier 3 · Cooling
Their historical signal is getting weaker. This is where another send can borrow from the future: a small lift today, followed by more people learning to ignore tomorrow.
Use fewer, more defensible sends with a clear reason to interrupt.Tier 4 · Dormant
A dormant segment is not a revenue target. It is a decision queue. Separate profiles with commercial behaviour outside email from people showing no meaningful signal anywhere.
Run a finite reactivation sequence. If silence continues, remove them from regular campaign eligibility.Klaviyo provides an Apple Privacy Open flag and recommends using it when segmenting or analysing engagement.2
Set windows from your business, not a template
- 01
Send cadence
A daily sender accumulates evidence faster than a weekly sender.
- 02
Buying cycle
A 21-day replenishment product and a high-consideration purchase need different time horizons.
- 03
Signal quality
Give more weight to clicks, site activity and purchase behaviour than privacy-affected opens.
Klaviyo’s engagement-track reference uses different windows depending on whether a brand sends daily, several times a week, weekly or monthly.1 Use those examples as a starting point, then calibrate from your own customer cycle and performance.
Turn the ladder into campaign eligibility
- High-relevance operational messages: active intent and warm, with logic tied to the behaviour.
- Core brand campaigns: active intent and warm; add cooling only when the reason is strong.
- Major launches and peak events: broader reach may be justified, but measure downstream effects.
- Reactivation: dormant only, isolated from the normal calendar.
This is more useful than debating one universal weekly frequency. Frequency becomes a consequence of customer signal and campaign value.
Measure the result in three layers
Commercial response
Revenue per recipient, conversion, average order value and marginal revenue.
Engagement quality
Clicks, site sessions and movement up or down the ladder.
Audience health
Unsubscribes, complaints, bounces and suppression growth.
Change one meaningful variable at a time. If you widen eligibility and increase cadence simultaneously, you will not know which decision created the result.
A practical build order in Klaviyo
- 01
Define reliable signals
Choose the clicks, site and purchase behaviour you can trust.
- 02
Set the windows
Match them to your cadence and buying cycle.
- 03
Make tiers exclusive
Each profile should sit in one operating category.
- 04
Assign eligibility
Decide which tiers each campaign earns access to.
- 05
Review monthly
Track movement, complaints and marginal revenue by tier.
The goal is not a perfect segment on day one. It is a repeatable way to make better send decisions.
The Inbox Operating System™
Build the system, not another one-off segment.
Define audience tiers, campaign eligibility and measurement rules without guessing from one send to the next.
Get the system for $37Frequently asked questions
Engagement segments FAQ
What is an engaged segment in ecommerce email?
It is a group of subscribers with recent evidence of attention or buying behaviour. Strong definitions use clicks, site activity, checkout and purchase data, while treating privacy-affected opens carefully.
How often should I email an engaged segment?
There is no universal number. Send more frequently to stronger, more recent signals and less frequently as evidence weakens. Calibrate against your buying cycle, campaign value and audience-health metrics.
Should inactive subscribers be deleted?
Usually, no. After a finite reactivation effort, suppress profiles that remain inactive so they stop receiving marketing email while their historical profile data remains available.
Sources