Ecommerce retention marketing agency

Connect segmentation, flows and campaigns to improve second purchase, frequency and reactivation with customer-level measurement.

Customer retention continues a good first purchase

Ecommerce retention aims to continue the relationship after the first order. Email can explain a product, answer questions and introduce a relevant next purchase. It does not replace product quality, delivery, pricing or customer service. A retention plan should identify which team can address each issue.

Start with a specific question: what prevents someone from returning? They may not know how to use the product, be unaware of compatible accessories or only receive general offers. They may simply not need another purchase yet. These situations require different responses; increasing everyone’s frequency is not a diagnosis.

An email marketing strategy should connect an observed need, a customer group and a verifiable action. That relationship helps decide which automation to build, which campaign makes sense and what evidence is missing before investing further.

The product cycle determines the repeat-purchase opportunity

Analyse the catalogue by uses and reasons to return, rather than merchandising categories alone. A store can sell consumables and durable products to the same person. Using one reactivation delay for both mixes different needs and complicates interpretation.

The table offers hypotheses to investigate. These are not universal schedules or recommendations based on client results. Check each opportunity against orders, enquiries and product knowledge.

Purchase typePossible reason to returnInformation neededMessage to explore
ConsumableReplenishment may be approachingPurchased size and observed repeat patternHelp choosing an appropriate refill
Durable productLearning to use or maintain itPurchased model and common questionsUsage guidance and compatible accessories
Fashion or collectionA relevant new item appearsKnown preferences, season and availabilitySelection related to the customer’s interests
Gift purchaseAnother occasion arisesKnown context without assuming who uses the productIdeas for a new occasion
Purchase with an issueA problem needs resolving before returningIssue status and customer service ownerService follow-up before a promotion

Average time between orders may guide investigation, but it does not describe every buyer. Examine variation, categories and seasonality before turning it into a sending rule.

Work on the experience before asking for another order

Post-purchase follow-up can support product use through preparation, care, compatibility or answers to questions. Content should arrive when useful. The order date does not prove the parcel has been delivered; messages must respect the information available.

Imagine a fictional coffee-machine store. After delivery, setup guidance may make more sense than immediately offering another machine. Accessories or suitable coffee could become relevant later. The sequence follows actual use rather than filling calendar gaps.

Coordinate marketing with customer service. If a return or unresolved issue exists, define its effect on the journey. The team needs to know which data exists, when it updates and who owns it. Friendly copy cannot fix a rule that keeps selling while someone waits for a solution.

Repeat purchases should not always depend on discounts. Explore reasons involving availability, usefulness, selection or service when they fit the brand. When using an incentive, record its cost and terms so evaluation goes beyond gross sales.

Distinguish recent, repeat and lapsed customers

Segmentation should translate the customer’s situation into communication decisions. Define why someone belongs to a group, what changes for them and when they leave. Creating segments without changing the message or its priority adds work without clarifying the experience.

A recent buyer may need to receive and use the product successfully. A repeat buyer may benefit from discovering a complementary category. Someone who has gone longer than expected without buying may enter a winback sequence, provided their contact state permits sending.

Do not treat each segment independently. One person can meet several rules simultaneously. Define priorities, exclusions and campaign coordination so follow-up does not become repeated messages about needs already addressed.

No recent purchase does not necessarily mean complete disinterest. Review the category’s cycle and other available signals before labelling someone. Similarly, a purchase does not itself change communication preferences: marketing selection must continue to honour unsubscribes and exclusions.

Measure repeat purchases with comparable cohorts

Klaviyo cohort reports analyse groups of profiles over time. Check the specific report definition before treating it as equivalent to your retention measure.

For your own second-purchase measure, define customers whose first valid order falls in a given period. Count those making a second valid purchase within the same observation window. Decide how cancellations, returns, test orders and duplicate customers are handled before calculating.

The second-purchase rate is the number of cohort members who repeat within that window divided by eligible customers in the cohort, multiplied by one hundred. The denominator counts people, not orders or emails sent.

In this fictional example, both cohorts have completed the same observation window. The figures illustrate the calculation only.

Example cohortEligible customersCustomers with a second purchaseRate
A1,00018018%
B6009015%

The difference alone does not prove that email caused it. Review product mix, acquisition, promotions and seasonality. A recent cohort that has not completed the window cannot be compared directly with one that has had all that time to repeat.

Separate attribution from the effect of an action

Klaviyo attribution windows are configurable. Retain the settings used when comparing periods; changing them can alter attributed results without changing purchase behaviour.

Attribution models distribute conversion credit among interactions. Last-touch and linear models can describe the same purchase differently.

To estimate an action’s effect, design the test before sending. For example, does post-purchase usage guidance improve second purchases compared with usual follow-up? Define eligibility, random assignment to treatment and control where feasible, and a window suited to the decision being observed.

The control should retain necessary service and communications; the comparison concerns the agreed marketing intervention. Avoid unrelated campaigns reaching only one group and complicating interpretation. Document incidents and do not stop at the first favourable result.

No sample size fits every store. Before starting, estimate a meaningful difference, available volume and acceptable uncertainty. Where data is insufficient for a reliable comparison, present the result as exploratory and identify the evidence needed next.

Review discounts, returns, unsubscribes and operational workload as well as sales. An action can increase orders yet be unattractive because of its cost or its effect on customer relationships.

What a retention service should deliver

A retention service should connect analysis, content and operations. Agree what will be implemented and what depends on the store, including product information, service, logistics and website changes. Email can only use information and offers the business can support.

The initial plan should identify a priority opportunity and the conditions for launching it. Subsequent email and repeat-purchase measurement should lead to a decision: maintain, correct, expand or stop. A report without that decision leaves the work unfinished.

  • Opportunity map by category and customer situation.
  • Segment definitions, exclusions and message priorities.
  • Approved content and journeys with named owners.
  • Data, link and condition checks before activation.
  • Cohort, observation window and monitoring metric definitions.
  • Test plan with explicit limitations and uncertainty.
  • Change log and the team’s next decision.

Retention rests on an experience worth repeating and communication that supports it. An agency should explain the work, how it will be checked and which results it cannot yet claim. A useful plan does not require promising a universal repeat-purchase rate.

Sources and further reading

AI-assisted translation

Article by Dídac Anton. The English, German, Dutch and French versions were translated from Spanish with the help of AI.

Read the Spanish original