Ecommerce retention guide
12 Best Email Automation Tools for Ecommerce Retention
Start with Klaviyo if you have order data to work with: its Email plan is $30 a month at 1,000 profiles, $100 at 5,000 and $150 at 10,000, and its segments are built from purchase history. Price it against Drip ($39 up to 2,500 people, $89 at 5,000 people and $154 at 10,000 people, with unlimited sends), and look at Omnisend if you want email and SMS cheaply. Here are 12 tools for post-purchase value, replenishment, loyalty and win-back.
How to use this list
The order is an editorial starting point for a store with a few thousand customers, not a claim that one product wins every stack. Set each platform against the events you really hold: order status, product or category, consent, inventory, support state, and the date a customer is likely to need the product again.
Each price in the list comes from the vendor’s own pricing page as read on October 7, 2026, and the tool name links there. Braze and Iterable publish no self-service price, so they are marked as pricing on request (quote-based). A retention tool also costs you in data cleanup, deliverability work and weekly QA, which no pricing page shows.
| Decision lens | Ask before buying | Evidence to collect |
|---|---|---|
| Context | Does it receive the order, product and consent data that make a retention email relevant? | A sample order payload and the contact record it produces |
| Control | Does a refund, complaint or open support case stop promotional sends on its own? | A refunded test order that drops out of a live flow |
| Economics | What does the plan cost when the list doubles, and which limit do you hit first? | A 12-month cost model at your own growth rate, plus owner hours |
Shortlist at a glance
| # | Tool | Best for | Price on the vendor’s page |
|---|---|---|---|
| 1 | Klaviyo | Deep behavioral segmentation and purchase-based lifecycle programs | Email plan $30 a month at 1,000 profiles, $100 at 5,000 profiles and $150 at 10,000 profiles; free up to 250 active profiles |
| 2 | Omnisend | Retail teams combining email, SMS, and onsite conversion moments | Free for 250 contacts and 500 emails a month; Standard promotional $11.20 a month at 500 contacts; Pro promotional $41.30 at 2,500 contacts |
| 3 | Drip | Direct-to-consumer lifecycle automation with a commerce-first model | $39 a month for up to 2,500 people, $89 at 5,000 people and $154 at 10,000 people; 14-day free trial |
| 4 | Customer.io | Complex behavioral journeys across email and product messaging | Essentials $100 a month for 5k profiles and $145 at 10k profiles, billed monthly; Premium from $1,000 a month, billed yearly |
| 5 | Braze | Large brands coordinating lifecycle messaging across many channels | Pricing on request (quote-based); see the pricing page |
| 6 | Iterable | Cross-channel lifecycle programs with a strong experimentation culture | Pricing on request (quote-based); the pricing page directs buyers to book a demo |
| 7 | Brevo | Budget-conscious teams needing email plus transactional capabilities | Free with 300 sends a day; Starter from $9 a month and Standard from $18 a month, both from 5,000 emails a month |
| 8 | Mailchimp | Small stores that want familiar campaign and automation basics | Free for 250 contacts and 500 sends a month; Standard from $20 at 500 contacts, $100 for 2,501–5,000 contacts and $135 for 5,001–10,000 contacts |
| 9 | ActiveCampaign | Teams combining lifecycle email with CRM-style sales and service context | Starter $15, Plus $49, Pro $79 a month at 1,000 contacts; Starter $79 at 5,000 contacts and $149 at 10,000 contacts (annual billing) |
| 10 | HubSpot Marketing Hub | Stores that need marketing automation connected to a broader CRM | Starter $7, Professional $800, Enterprise $3,600 a month, priced per seat; free tools available |
| 11 | Kit | Creator-led commerce and simple audience-based sequences | Free up to 10,000 subscribers; Creator $33 a month at 1,000 subscribers, $75 at 5,000 subscribers and $116 at 10,000 subscribers (billed yearly) |
| 12 | MailerLite | Small catalogs and teams that value straightforward operations | Free for 250 subscribers and 2,500 emails a month; Comfort $19 at 1,000 subscribers, $49 at 5,000 subscribers and $89 at 10,000 subscribers (monthly billing) |
1. Klaviyo: Deep behavioral segmentation and purchase-based lifecycle programs
Klaviyo is the first tool to evaluate for retention because its segments are built from what a customer bought, viewed and returned, which is exactly the input a replenishment or win-back flow needs. The Email plan is $30 a month at 1,000 profiles, $100 at 5,000 and $150 at 10,000, and a free plan covers up to 250 active profiles and 500 emails a month, enough to build and test a first flow before paying. Full plan list on the Klaviyo pricing page.
Plan the setup before the first flow. Sync the order and product feed, decide how you will sunset profiles that never engage because they count toward the profile tier, and build a bought-in-the-last-30-days segment to keep promotions away from recent buyers. Then start with a post-purchase flow for your best-selling product and a 90-day win-back flow, and compare repeat-order rate against customers who joined before the flows went live.
| Best for | Pros | Cons |
|---|---|---|
| Deep behavioral segmentation and purchase-based lifecycle programs | Strong event-driven segmentation and a mature ecommerce ecosystem | Data design and governance take real operator time, and the Email plan price steps from $30 to $100 between 1,000 and 5,000 profiles |
2. Omnisend: Retail teams combining email, SMS, and onsite conversion moments
Omnisend is the low-cost way into multichannel retention. Standard at a promotional $11.20 a month covers 500 contacts and 6,000 emails, Pro at a promotional $41.30 covers 2,500 contacts with unlimited emails, and the free plan lets a store of up to 250 contacts build a first win-back flow on 500 emails a month. Those are first-period offer rates, so budget from the full price shown beside each offer on the pricing page. Full plan list on the Omnisend pricing page.
The fit is a store that wants a post-purchase email followed by an SMS nudge for the same product, because both channels sit in one workflow. The retention risk is channel overlap: add a rule that a customer who got a replenishment SMS today is skipped by the email version, and keep SMS consent as its own field, separate from email consent.
| Best for | Pros | Cons |
|---|---|---|
| Retail teams combining email, SMS, and onsite conversion moments | Commerce-oriented templates and multichannel workflow patterns | The $11.20 and $41.30 rates are first-period offers, and SMS is billed on top at the per-message rate shown on its pricing page |
3. Drip: Direct-to-consumer lifecycle automation with a commerce-first model
Drip prices by people rather than by sends, with unlimited email sends on its tiers, so a store that mails often does not pay extra for a busy retention calendar. The pricing page lists $39 a month for up to 2,500 people, $49 at 3,000, $89 at 5,000 and $154 at 10,000. Compared with the first entry, it costs more at 1,000 profiles, less at 5,000 and about the same at 10,000; the cost table further down puts the numbers side by side. Full plan list on the Drip pricing page.
The saving matters less than the build. Up to 50 workflows on the lower tiers is plenty for post-purchase, replenishment, cross-sell and win-back, so the practical limit is how consistently you write the exit rules. Give every workflow an owner and a monthly look at who entered, who converted and who unsubscribed.
| Best for | Pros | Cons |
|---|---|---|
| Direct-to-consumer lifecycle automation with a commerce-first model | Designed around ecommerce events and customer journeys, with unlimited email sends | No ongoing free plan, and a move means connecting your storefront and rebuilding every workflow |
4. Customer.io: Complex behavioral journeys across email and product messaging
Customer.io makes sense for a retailer with an app or a custom storefront where a developer can send events such as a reorder coming due or a subscription pausing. Essentials starts at $100 a month for 5k profiles, includes 1 million emails a month, reads $145 at 10k profiles, and charges $0.009 for each extra profile. Essentials does not include managed deliverability, which the plan comparison lists on the higher tiers. Full plan list on the Customer.io pricing page.
The retention advantage is branching on any attribute you send: bought twice, ignored the cross-sell, spends above the average order. The price is a data contract. Agree the event names and who fixes a broken payload, and clear out old test profiles before a billing period opens, because a profile that exists at any point in the month counts toward that month even if you delete it.
| Best for | Pros | Cons |
|---|---|---|
| Complex behavioral journeys across email and product messaging | Flexible event logic and orchestration for teams with product and data support, with 1 million emails a month on Essentials | The flexibility becomes implementation overhead for a small merchandising team, and each extra profile costs $0.009 |
5. Braze: Large brands coordinating lifecycle messaging across many channels
Braze is for a retailer large enough to coordinate email, push and in-app messages from one customer profile. It has no self-service price: the pricing page describes billing by the volume of users engaging with your brand across several editions and points buyers to sales, so the cost is pricing on request (quote-based). Full plan list on the Braze pricing page.
Ask for a written quote that lists monthly active users, channel volumes and onboarding services as separate lines, then price the same journeys on a profile-priced tool such as the first two entries above. For a single-brand store with an email-first retention plan, the quote is unlikely to be justified by the flows it replaces.
| Best for | Pros | Cons |
|---|---|---|
| Large brands coordinating lifecycle messaging across many channels | Broad cross-channel orchestration and enterprise-grade experimentation options | May be disproportionate for a store that only needs email retention flows |
6. Iterable: Cross-channel lifecycle programs with a strong experimentation culture
Iterable describes itself as an AI customer engagement platform built for enterprise scale, and its pricing page asks buyers to book a demo rather than listing a plan, so any figure you see elsewhere is not a list price. That puts it with Braze in the quote-based group, pricing on request, and out of reach for a store still choosing between self-service plans. Full plan list on the Iterable pricing page.
It earns a place on a retention shortlist for testing culture: coordinated journeys, split tests across channels and a team that will run them. Before a demo, collect your last six months of order and event volumes and decide who owns the data feed, since implementation work usually decides whether the contract is worth it.
| Best for | Pros | Cons |
|---|---|---|
| Cross-channel lifecycle programs with a strong experimentation culture | Useful for coordinated journeys and testing at scale | Commerce connectors and the data work behind reliable events decide whether the contract pays back |
7. Brevo: Budget-conscious teams needing email plus transactional capabilities
Brevo is the budget option when a store needs promotional email and order notifications under one roof. The free plan stores up to 100,000 contacts but sends 300 emails a day, so a store with 6,000 customers would need 20 days to mail all of them once. Starter from $9 a month removes the daily limit and starts at 5,000 emails a month. Full plan list on the Brevo pricing page.
For retention the question is whether you can build the segments you need. Test it with one concrete rule, such as bought a consumable 45 days ago and has not reordered, and see whether it can be expressed from the order data your storefront sends. If it needs a spreadsheet workaround, the cheap plan will cost you in hours.
| Best for | Pros | Cons |
|---|---|---|
| Budget-conscious teams needing email plus transactional capabilities | Accessible entry point, a free plan that stores up to 100,000 contacts, and a broad communication toolkit | The free plan caps sends at 300 a day, and Standard, from $18 a month, is the plan described with automation, A/B testing and advanced reports |
8. Mailchimp: Small stores that want familiar campaign and automation basics
Mailchimp suits a small store whose owner already works in it. Standard starts at $20 a month at 500 contacts, then $100 for 2,501 to 5,000 contacts and $135 for 5,001 to 10,000, with a send allowance of up to 60,000 emails a month in the first of those bands and up to 120,000 in the second. The free plan, at 250 contacts and 500 sends a month, covers one small win-back test and little else. Full plan list on the Mailchimp pricing page.
Retention flows are where it gets thinner than a commerce specialist, so scope the pilot narrowly: one post-purchase thank-you with care tips, one replenishment reminder tied to a product’s typical use-up time, and one lapsed-customer email. Keep customers in a single audience so a shopper who buys twice is not billed as two contacts.
| Best for | Pros | Cons |
|---|---|---|
| Small stores that want familiar campaign and automation basics | Large ecosystem and approachable campaign workflows | Contact bands raise the bill in large steps, and Standard allows up to 12 times your contact count in monthly sends |
9. ActiveCampaign: Teams combining lifecycle email with CRM-style sales and service context
ActiveCampaign suits a retailer with a sales or service layer on top of the shop: wholesale buyers, subscription boxes with account managers, high-ticket items with a call before the purchase. The pricing page lists Starter at $15 a month at 1,000 contacts, Plus at $49 and Pro at $79, and at 10,000 contacts the selector reads $149, $189 and $375. Starter limits an automation to 5 actions, enough for a thank-you and one follow-up but not for a full replenishment branch. Full plan list on the ActiveCampaign pricing page.
The retention win is a single contact record shared by marketing and service: a customer with an open complaint can be excluded from a promotion by a rule you can read. Agree names for tags and deal stages before building, because the flexibility that helps here is also how two teams end up with overlapping automations.
| Best for | Pros | Cons |
|---|---|---|
| Teams combining lifecycle email with CRM-style sales and service context | Detailed automation logic and CRM-oriented handoffs | More surface area means more setup and permission management, and Starter limits an automation to 5 actions |
10. HubSpot Marketing Hub: Stores that need marketing automation connected to a broader CRM
HubSpot suits a store that is really a B2B or high-consideration business with a sales team behind the checkout. Marketing Hub Starter is $7 a month per seat with free tools alongside, Professional is $800 and Enterprise $3,600, and the automation row gives the free tools 1 automated action, Starter up to 10 and Professional unlimited. A thank-you flow with a review request fits inside ten actions; add replenishment reminders by product and a tiered win-back and you are likely past them, which is where the $800 tier comes in. Full plan list on the HubSpot Marketing Hub pricing page.
The reason to pay is shared context: orders, support tickets and sales notes visible on one contact. If those already live in a help desk and a store admin you like, adding a CRM suite for email retention alone is hard to justify.
| Best for | Pros | Cons |
|---|---|---|
| Stores that need marketing automation connected to a broader CRM | Strong shared customer context across marketing and commercial teams | Starter stops at 10 automated actions and unlimited actions start at Professional, $800 a month, so a retention programme with several flows pays a lot for a CRM suite it may not use |
11. Kit: Creator-led commerce and simple audience-based sequences
Kit, formerly ConvertKit, fits a content-led shop selling a few products, such as a creator with a course, a print run and some merch, where retention means the next product for a person who already bought one. Visual Automations and sequences are on Creator, listed at $33 a month for 1,000 subscribers, $75 at 5,000 and $116 at 10,000, billed yearly. The free plan up to 10,000 subscribers covers forms, landing pages and broadcasts only. Full plan list on the Kit pricing page.
Retention here is tag-based: tag buyers by product, start a how-to-get-the-most-from-it sequence on purchase, and a cross-sell sequence for people who bought product A but not B. It works well up to a handful of products and strains when the catalog runs to hundreds of items.
| Best for | Pros | Cons |
|---|---|---|
| Creator-led commerce and simple audience-based sequences | Simple sequences and audience management for content-led businesses, with free migrations from other tools | Its pricing page describes forms, sequences and tagging rather than a product catalog or order-event model, so purchase data reaches it as tags you set up yourself |
12. MailerLite: Small catalogs and teams that value straightforward operations
MailerLite fits a store with a small catalog and one person doing the marketing. Comfort is $19 a month at 1,000 subscribers, $49 at 5,000 and $89 at 10,000 on monthly billing, and its monthly email allowance is ten times your subscriber tier, so a 5,000-subscriber tier can send 50,000 emails. That covers a weekly campaign plus several automated flows with room to spare. Full plan list on the MailerLite pricing page.
The limit is logic rather than volume. A thank-you and a 45-day check-in work well, but a replenishment flow that depends on how many units a customer bought needs order data pushed in from the store or another tool, so test that before you rely on it.
| Best for | Pros | Cons |
|---|---|---|
| Small catalogs and teams that value straightforward operations | Low operational complexity for foundational nurture and retention, with Comfort sends of ten times your subscriber tier each month | May need external data or tools for advanced product, loyalty and replenishment logic |
What retention costs at 1,000, 5,000 and 10,000 contacts
These are the monthly prices read from the pricing pages linked in each row. Billing differs by vendor: ActiveCampaign and Kit show yearly-billed rates, Klaviyo, Drip and MailerLite show monthly rates, and Customer.io Essentials is billed monthly with its smallest listed size at 5k profiles. Read across a row and treat the billing basis as part of the comparison.
| Tool and plan | 1,000 contacts | 5,000 contacts | 10,000 contacts |
|---|---|---|---|
| Klaviyo Email | $30 | $100 | $150 |
| Drip | $39 (covers up to 2,500) | $89 | $154 |
| MailerLite Comfort | $19 | $49 | $89 |
| ActiveCampaign Starter | $15 | $79 | $149 |
| Customer.io Essentials | starts at 5k profiles | $100 | $145 |
| Mailchimp Standard | from $20 at 500 contacts | $100 (2,501–5,000 band) | $135 (5,001–10,000 band) |
The first two rows decide most retention choices. Klaviyo is cheaper at 1,000 contacts ($30 against $39) and at 10,000 ($150 against $154), while Drip is cheaper in the middle ($89 against $100 at 5,000). That is a small gap, so choose on segmentation depth and how your storefront connects, then look up the price at the list size you expect to have in a year.
A bounded retention pilot
Pick one store, one customer group, and one outcome to move over six weeks, usually repeat orders within 60 days of a first purchase. Hold back a slice of eligible customers who receive nothing, write down what puts a customer into the flow and what takes them out, and keep customers with open service cases, recent refunds or an unsubscribe out of every promotional step. An encouraging open rate in week one is not a reason to widen the program.
| Phase | Scope | Pass condition |
|---|---|---|
| Week 1 | Connect orders and products, set up consent fields, and write the exit rules | A test order and a test refund both change the contact the way you expect |
| Weeks 2–3 | Start the post-purchase flow for one product, or a replenishment flow for one consumable | Emails render on mobile, stop at the right moment, and credit the right order |
| Weeks 4–6 | Compare buyers who received the flow with the held-back group on repeat orders after margin, unsubscribes and complaints | The gain is large enough to cover the plan price and the hours spent maintaining the flow |
Retention flow checklist
| Flow | What the email does | Guardrail |
|---|---|---|
| Post-purchase | Shows the customer how to get the most from what they bought, such as care steps or a setup video | Skip anyone with an open service case or a refund on the order |
| Replenishment | Reminds the customer shortly before the product usually runs out | Set the interval from your own repeat-order data, not a guess, and never invent a deadline |
| Cross-sell | Suggests one product that works with the first purchase | Use category and compatibility rules, and hide anything that is out of stock |
| Win-back | Gives a lapsed customer a reason to return, such as a restock or a new variant | Try a no-discount version first, and cap the number of attempts per customer |
What a retention pilot actually measures
| Misleading signal | Why it misleads in a store | Count this instead |
|---|---|---|
| Revenue credited to the email | A customer who was about to reorder anyway gets the credit for the sale | Repeat orders against a held-back group of similar customers |
| Open rate | Mail apps that pre-load images inflate opens, so a flow can look healthy while nobody reads it | Clicks to a product page and orders within a fixed window |
| Free plan as the test bed | Klaviyo’s free plan stops at 250 active profiles and Omnisend’s at 250 contacts, too small to show a replenishment cycle | A trial of the plan you would pay for, on a real slice of the list |
| A two-week window | A product that lasts 60 days produces no reorders in that time | A window at least as long as the product’s usual use-up time |
Common implementation mistakes to avoid
- Launching a post-purchase flow, a win-back flow and a weekly newsletter in the same week without a limit on how many emails one customer can receive
- Importing a customer list from a marketplace or a point-of-sale system without recording when and how each person gave consent
- Letting a discount code sit in every win-back email, so the lapsed customers learn to wait for it
- Choosing a platform on the strength of its template gallery when the deciding question is whether it can read your order data
Recommended reading order
- Ecommerce email automation, for the welcome, cart and post-purchase flows that come before retention
- Abandoned cart automation, for recovering the sale that did not complete
- Re-engagement automation, for the lapsed-customer step of a win-back flow
- Best email automation tools for ecommerce, for the acquisition side of the same stores
- Email automation metrics, for what to count once a flow is live
Moving retention flows from another tool
A migration is mostly a rebuild of flows, not a copy of them. Export the contact list with consent dates and suppression status first, then rebuild the post-purchase and win-back flows one at a time on the new platform and run them side by side with the old ones for one full replenishment cycle before switching the old ones off. Customers who are mid-flow at the cutover are the group most likely to receive a duplicate or no email at all, so list them by hand.
Plan around the pricing unit as well. Klaviyo, Drip and Customer.io price by profiles or people, so removing contacts who never engage before the move lowers the first bill, while MailerLite and Mailchimp price by subscribers or contact bands. Kit lists free migrations from other platforms on its pricing page, which removes one cost from a small-store switch.
Which retention flow to build first
- Post-purchase care and setup. It reaches every buyer, relies only on the order event, and usually has the clearest effect on returns and support tickets.
- Replenishment reminder. Build it for the one product with a predictable use-up time, and set the delay from your own repeat-order data.
- Cross-sell. Add it once the first two work and you know which product pairs customers actually buy together.
- Win-back. Leave it for last, because it depends on a trustworthy definition of lapsed and on exit rules for everything above.
Retention numbers worth a weekly look
| Number | What it tells you | When to act |
|---|---|---|
| Repeat-order rate in the flow group against the holdout | Whether the flow adds orders beyond those that would have happened anyway | When the gap stays near zero after one full use-up cycle |
| Unsubscribes per send | Whether the frequency or the offer is wearing customers out | When it rises after a new flow joins the calendar |
| Spam complaints | Whether recipients remember agreeing to hear from you | Straight away, since complaints damage deliverability for every later send |
| Profile count against the plan tier | How close the list is to the next price step, such as 1,000 to 5,000 on the Email plan | Before an import, not after the invoice |
FAQ
What is the best email automation tool for ecommerce retention?
For most stores with real order data it is Klaviyo: its Email plan is $30 a month at 1,000 profiles, $100 at 5,000 and $150 at 10,000, and its segments are built from purchase history. Drip is the one to price against it, since it does not meter sends, and Omnisend is the cheaper way into email plus SMS.
How many ecommerce retention flows should we launch first?
Start with two: a post-purchase education flow and either a replenishment reminder or a 90-day win-back. Add branching only after the exit rules work, a refunded or complaining customer stops receiving promotions, and you can see repeat orders against a group that did not get the flow.
Should retention email use discounts?
Not by default. Try product tips, replenishment help and service recovery first, because a discount in every win-back email teaches customers to wait for one. Judge a flow by repeat orders after margin, not by clicks.
How should we compare pricing between Klaviyo, Drip and Omnisend?
Price the same list at three sizes. At 1,000 profiles the Email plan is $30 a month on Klaviyo against $39 on Drip; at 5,000 it is $100 against $89; at 10,000 it is $150 against $154. Omnisend lists a promotional $11.20 at 500 contacts, so work from the full price shown beside it. Quote-based tools such as Braze and Iterable need a written estimate.