Ecommerce buying guide
Best Email Automation Tools for Ecommerce
The best ecommerce automation tool is the one that can react to customer and order context without sending the wrong message at the wrong time. This shortlist covers platforms for welcome flows, browse and cart recovery, post-purchase education, replenishment, and retention.
How to compare ecommerce automation
Start with one commercially meaningful event: a signup, product view, cart creation, purchase, delivery, or likely replenishment point. Map the event to a consented audience, a useful next action, and an exit condition. A store should be able to explain why a customer entered a flow, what happens after a purchase, and how service issues or inventory changes pause promotional messages.
For most stores the answer is Klaviyo: it is free to 250 profiles, then $30/mo at 1,000 profiles, $100 at 5,000 and $150 at 10,000, and its flows are built around cart, order and product events. Omnisend is the alternative when SMS belongs in the same workflows, and Drip ($89/mo at 5,000 people, $154 at 10,000) when you want unlimited sends and revenue attribution per flow. Each price below comes from the vendor’s own pricing page, read on 2026-10-07.
| Decision lens | Question | Pilot evidence |
|---|---|---|
| Store data | Can it receive accurate catalog, order, and customer events? | Sample payload, identity match, sync freshness, and failure alert |
| Message control | What stops a promotion after purchase, opt-out, refund, or support escalation? | Exit rule, suppression test, consent record, and human override |
| Economics | What scales besides the monthly invoice? | Profile growth, send volume, implementation, QA, and maintenance effort |
What the four main store tools cost at 1,000, 5,000 and 10,000 contacts
| Tool and plan | 1,000 contacts | 5,000 contacts | 10,000 contacts |
|---|---|---|---|
| Klaviyo Email | $30/mo | $100/mo | $150/mo |
| Drip | $39/mo (covers up to 2,500) | $89/mo | $154/mo |
| Mailchimp Standard | $20/mo at 500 contacts | $100/mo (band 2,501 to 5,000) | $135/mo (band 5,001 to 10,000) |
| ActiveCampaign Starter, billed annually | $15/mo | $79/mo | $149/mo |
Sources: the pricing pages of Klaviyo, Drip, Mailchimp and ActiveCampaign. Klaviyo counts profiles, Drip counts active people, Mailchimp and ActiveCampaign count contacts, so the same shop can land in different bands on each. Drip’s $154 at 10,000 is $4 above Klaviyo’s $150, and Drip lists unlimited sends on those tiers. ActiveCampaign Starter limits each automation to 5 actions, which matters for a cart flow with branches.
Shortlist by ecommerce job
| Tool | Best for | Pricing |
|---|---|---|
| Klaviyo | Commerce behavior and product data (our pick for most stores) | Free to 250 profiles; Email $20/mo at 500 profiles, $30 at 1,000, $100 at 5,000, $150 at 10,000 |
| Omnisend | Retail email and SMS journeys | Free: 250 contacts, 500 emails a month; Standard shows $11.20/mo at 500 contacts as a first-three-months rate; Pro from 2,500 contacts |
| ActiveCampaign | Cross-channel customer journeys | Starter is $15/mo and Plus is $49/mo for a 1,000-customer list; Starter reaches $79/mo at 5,000 customers and $149/mo at 10,000, billed annually |
| Brevo | Lean marketing and transactional email | Sends up to 300 emails a day free; paid tiers are priced on an emails-sent allowance rather than customer count, from $9/mo (Starter) and $18/mo (Standard) at 5,000 emails a month |
| Mailchimp | Familiar campaigns for smaller stores | Free: 250 contacts, 500 sends a month; Standard $20/mo at 500 contacts, $100 at 2,501 to 5,000, $135 at 5,001 to 10,000 |
| Drip | Direct-to-consumer lifecycle marketing | $39/mo for 1 to 2,500 people, $89 at 5,000, $154 at 10,000, $369 at 25,000, $699 at 50,000; 14-day trial |
| HubSpot | Commerce messaging joined to CRM context | Free tools include a single automated action; Starter costs $7 per seat per month for up to 10 actions, and unlimited actions begin with Professional at $800/mo |
| Customer.io | Event-led lifecycle journeys | Essentials $100/mo at 5k profiles, $145 at 10k, $235 at 20k; Premium from $1,000/mo |
| Iterable | Multi-channel retail lifecycle programs | Pricing on request (quote-based); no store-size price is published, only a route to book a demo |
| Braze | Large-scale cross-channel engagement | Pricing on request (quote-based); the bill follows how many shoppers engage with your brand, not a published tier |
| SendGrid | Developer-owned transactional and store email | Order-email API from $19.95/mo (Essentials) or $89.95/mo (Pro); the separate campaign product is free to 2,000 contacts and Basic starts at $15/mo |
| Postmark | Reliable transactional customer messages | Basic, Pro and Platform are $15, $16.50 and $18 a month at 10,000 emails and $55, $60.50 and $66 at 50,000; the Free plan covers 100 emails a month |
| ConvertKit | Creator-led shops and digital products | Free to 10,000 subscribers; Creator $33/mo at 1,000 subscribers, billed yearly (Kit, formerly ConvertKit) |
Klaviyo: Commerce behavior and product data (our pick for most stores)
Klaviyo is our pick for most online stores because its flows are built around store events such as carts, orders and product views, and its published price ladder is simple to model: $30/mo at 1,000 profiles, $100 at 5,000 and $150 at 10,000. The free plan stops at 250 active profiles and 500 emails a month, so treat it as a test bed rather than a plan to live on.
What a store pays: Free to 250 profiles; Email $20/mo at 500 profiles, $30 at 1,000, $100 at 5,000, $150 at 10,000. Source: Klaviyo’s own site.
| Best for | Pros | Cons | Implementation pilot |
|---|---|---|---|
| Commerce behavior and product data (our pick for most stores) | Strong ecommerce data model and flow-oriented campaign tooling. | Costs and setup complexity can increase with profiles, channels, and richer event tracking. | Pilot browse abandonment for one product category with purchase suppression and a margin-aware success metric. |
Omnisend: Retail email and SMS journeys
Omnisend puts email, SMS and web push in one workflow tool. Standard covers 500 contacts and 6,000 emails a month, and Pro starts at 2,500 contacts with unlimited emails. The $11.20/mo Standard figure on its pricing page is a promotional rate for the first three months, so budget for the regular monthly price after that; SMS starts at $0.007 per message for high-volume US sends and varies by country.
What a store pays: Free: 250 contacts, 500 emails a month; Standard shows $11.20/mo at 500 contacts as a first-three-months rate; Pro from 2,500 contacts. Source: Omnisend’s own site.
| Best for | Pros | Cons | Implementation pilot |
|---|---|---|---|
| Retail email and SMS journeys | Designed around common store flows and coordinated email/SMS programs. | Validate catalog sync, reporting depth, and the cost of adding channels at your volume. | Run welcome plus post-purchase education for one store segment and test channel consent separately. |
ActiveCampaign: Cross-channel customer journeys
ActiveCampaign lists Shopify and WooCommerce among its integrations and adds a CRM, which suits a store that also sells high-ticket items or wholesale through conversations. Starter limits each automation to 5 actions, so a store that wants branching with purchase exits will probably need Plus at $49/mo for 1,000 contacts.
What a store pays: Starter is $15/mo and Plus is $49/mo for a 1,000-customer list; Starter reaches $79/mo at 5,000 customers and $149/mo at 10,000, billed annually. Source: ActiveCampaign’s own site.
| Best for | Pros | Cons | Implementation pilot |
|---|---|---|---|
| Cross-channel customer journeys | Flexible visual automation and customer fields can support lifecycle branching. | A store needs disciplined naming, exit rules, and integration maintenance to avoid overlapping flows. | Build a three-step welcome journey with a purchase exit and review every path with customer support. |
Brevo: Lean marketing and transactional email
Brevo prices by emails sent rather than by contacts stored, with Starter from $9/mo and Standard from $18/mo at 5,000 emails a month. Its free plan stores up to 100,000 contacts and sends 300 emails a day, but marketing automation on the free plan covers 2,000 contacts, which is the limit a growing store meets first. It also sends transactional email, so order notices and campaigns can live in one account.
What a store pays: Sends up to 300 emails a day free; paid tiers are priced on an emails-sent allowance rather than customer count, from $9/mo (Starter) and $18/mo (Standard) at 5,000 emails a month. Source: Brevo’s own site.
| Best for | Pros | Cons | Implementation pilot |
|---|---|---|---|
| Lean marketing and transactional email | Can combine campaign, automation, and transactional needs in a comparatively lean stack. | Confirm that store events, segmentation, templates, and reporting are detailed enough for your use case. | Separate order notices from promotional mail, then test one consented replenishment reminder. |
Mailchimp: Familiar campaigns for smaller stores
Mailchimp’s free plan covers 250 contacts and 500 sends a month, which is enough to test a welcome series for a new shop. On list price it lands close to Klaviyo: $100/mo for up to 5,000 contacts against Klaviyo’s $100 at 5,000 profiles, and $135/mo for up to 10,000 against $150, so the decision rests on the depth of store flows rather than the invoice.
What a store pays: Free: 250 contacts, 500 sends a month; Standard $20/mo at 500 contacts, $100 at 2,501 to 5,000, $135 at 5,001 to 10,000. Source: Mailchimp’s own site.
| Best for | Pros | Cons | Implementation pilot |
|---|---|---|---|
| Familiar campaigns for smaller stores | Accessible audience, template, and campaign workflows for teams already using its ecosystem. | Deep product-behavior journeys may require integrations or additional operational work. | Start with a welcome series and one product-interest segment; measure first purchase rather than opens alone. |
Drip: Direct-to-consumer lifecycle marketing
Drip prices by active people, from $39/mo for 1 to 2,500 up to $154 at 10,000 and $699 at 50,000, with unlimited sends on the displayed tiers. It has a 14-day trial and no free plan, so it fits a store that already has a few thousand subscribers and wants revenue attributed to each flow.
What a store pays: $39/mo for 1 to 2,500 people, $89 at 5,000, $154 at 10,000, $369 at 25,000, $699 at 50,000; 14-day trial. Source: Drip’s own site.
| Best for | Pros | Cons | Implementation pilot |
|---|---|---|---|
| Direct-to-consumer lifecycle marketing | Focused on ecommerce lifecycle communication and behavioral segmentation. | Check integration coverage, data freshness, and reporting against the store’s actual stack. | Pilot a post-purchase education sequence for one product line with a support escalation path. |
HubSpot: Commerce messaging joined to CRM context
HubSpot suits a store that also sells through reps or wholesale accounts and wants those conversations in the same CRM as the campaigns. Its pricing page lists 1 automated action on the free tools, up to 10 on Starter and unlimited on Professional, so a full store lifecycle program means budgeting for Professional rather than Starter.
What a store pays: Free tools include a single automated action; Starter costs $7 per seat per month for up to 10 actions, and unlimited actions begin with Professional at $800/mo. Source: HubSpot’s own site.
| Best for | Pros | Cons | Implementation pilot |
|---|---|---|---|
| Commerce messaging joined to CRM context | Useful when ecommerce messaging must share context with sales, service, and CRM records. | Total cost and administration can rise as contacts, hubs, and automation expand. | Use one lifecycle property and one product-interest field, then verify sales and service exclusions. |
Customer.io: Event-led lifecycle journeys
Customer.io bills by profile, with Essentials at $100/mo for 5k profiles and 1 million emails a month included, and Premium from $1,000/mo. It makes sense for a store with a developer who can send clean purchase and product events; without one, the flexibility goes unused.
What a store pays: Essentials $100/mo at 5k profiles, $145 at 10k, $235 at 20k; Premium from $1,000/mo. Source: Customer.io’s own site.
| Best for | Pros | Cons | Implementation pilot |
|---|---|---|---|
| Event-led lifecycle journeys | Event and attribute logic can model nuanced post-signup, purchase, and re-engagement states. | Requires clean event schemas, reliable identity resolution, and a clear owner for data operations. | Trigger one replenishment or education flow from a documented event and compare against a holdout. |
Iterable: Multi-channel retail lifecycle programs
Iterable lists no public price and asks buyers to book a demo, so budgeting starts with a sales call. It is positioned as an enterprise-scale customer engagement platform, which is rarely the right first purchase for a small catalog.
What a store pays: Pricing on request (quote-based); no store-size price is published, only a route to book a demo. Source: Iterable’s own site.
| Best for | Pros | Cons | Implementation pilot |
|---|---|---|---|
| Multi-channel retail lifecycle programs | Broad orchestration can suit a retailer coordinating email with other customer channels. | Implementation and governance may be disproportionate for a small catalog or small team. | Test one post-purchase cohort with a single branch, frequency cap, and named data owner. |
Braze: Large-scale cross-channel engagement
Braze shows no single public price and bills on the volume of users engaging with your brand. It covers email, push, SMS and other channels for large programs, so a store that only sends email will be paying for capability it does not use.
What a store pays: Pricing on request (quote-based); the bill follows how many shoppers engage with your brand, not a published tier. Source: Braze’s own site.
| Best for | Pros | Cons | Implementation pilot |
|---|---|---|---|
| Large-scale cross-channel engagement | Built for coordinated customer engagement when scale and channel breadth justify the investment. | Procurement, instrumentation, and campaign governance are substantial considerations. | Run one retention cohort with email-only controls before adding in-app or other channels. |
SendGrid: Developer-owned transactional and store email
SendGrid has an Email API for developer-owned order emails and a Marketing Campaigns product with a free plan for up to 2,000 contacts and 6,000 emails a month. Choose it when an engineer owns the store’s transactional templates and you only need light campaigns on top.
What a store pays: Order-email API from $19.95/mo (Essentials) or $89.95/mo (Pro); the separate campaign product is free to 2,000 contacts and Basic starts at $15/mo. Source: SendGrid’s own site.
| Best for | Pros | Cons | Implementation pilot |
|---|---|---|---|
| Developer-owned transactional and store email | Fits teams that want engineering-owned templates, delivery events, and API integrations. | Journey design, preference management, and ecommerce segmentation may remain partly in-house. | Version one order-related template and test retries, suppression, rendering, and observability. |
Postmark: Reliable transactional customer messages
A store sending 50,000 order and shipping notices a month pays $55, $60.50 or $66 on Postmark’s Basic, Pro or Platform plan, against $15, $16.50 and $18 at 10,000. It handles the transactional side only, so pair it with Klaviyo, Omnisend or Drip for campaigns.
What a store pays: Basic, Pro and Platform are $15, $16.50 and $18 a month at 10,000 emails and $55, $60.50 and $66 at 50,000; the Free plan covers 100 emails a month. Source: Postmark’s own site.
| Best for | Pros | Cons | Implementation pilot |
|---|---|---|---|
| Reliable transactional customer messages | A focused transactional-email option for receipts, shipping updates, and service messages. | It is not a full promotional lifecycle platform, so marketing automation needs another layer. | Send one order-status message through a dedicated stream and audit delivery, retries, and reply routing. |
ConvertKit: Creator-led shops and digital products
ConvertKit now trades as Kit. It is worth considering for a creator who sells a handful of products: the free plan goes to 10,000 subscribers, and the Creator plan at $33/mo for 1,000 subscribers adds sequences and visual automations. It does not model orders and inventory the way the store-first tools above do.
What a store pays: Free to 10,000 subscribers; Creator $33/mo at 1,000 subscribers, billed yearly (Kit, formerly ConvertKit). Source: ConvertKit’s own site.
| Best for | Pros | Cons | Implementation pilot |
|---|---|---|---|
| Creator-led shops and digital products | Simple subscriber, tag, and sequence concepts can suit a creator with a small catalog. | Validate product, order, and inventory integrations before relying on it for retail complexity. | Run one lead-to-purchase sequence with a buyer tag exit and a clear unsubscribe path. |
A low-risk ecommerce pilot
| Phase | What to do | Proceed when |
|---|---|---|
| Choose | Select one flow, audience, success action, owner, and stop condition. | The team agrees on the event contract, consent basis, and purchase/service exclusions. |
| Instrument | Test identity, catalog and order sync, delays, suppression, rendering, and reply routing. | A test customer receives one correct message and exits when the state changes. |
| Measure | Compare contribution margin, first purchase, repeat purchase, or support outcome with a baseline or holdout. | Results are reviewed with unintended sends, unsubscribes, complaints, and deliverability. |
| Expand | Add branches only after ownership, inventory behavior, cost, and rollback are documented. | The team can recover from bad data and explain the maintenance burden before scaling. |
For implementation context, read our abandoned cart automation guide, ecommerce automation guide, and email automation metrics guide. You can also use the broader email automation guide to document ownership and measurement.
Decision table: which tool fits your priority?
| If your priority is… | Test first | Watch out for |
|---|---|---|
| Cart, browse and post-purchase flows on a growing store | Klaviyo first, then Drip or Omnisend | Catalog sync, and that Klaviyo bills by profile ($100/mo at 5,000) |
| A first welcome series on a small shop | Mailchimp's free plan (250 contacts, 500 sends a month) or Klaviyo's free plan (250 profiles) | What the first paid band costs: Mailchimp $20/mo at 500 contacts, Klaviyo $20 at 500 profiles |
| Order confirmations and shipping notices | Postmark or SendGrid's Email API next to your campaign tool | Keeping order notices separate from promotional consent |
| Budget control with a mixed newsletter and receipt load | Brevo, priced by emails sent from $9/mo | Its free plan limits marketing automation to 2,000 contacts |
| Stores that want email and SMS in one flow | Omnisend, which lists SMS from $0.007 per message for high-volume US sends | SMS pricing varies by country and volume |
| A shop with a sales team or wholesale accounts | HubSpot Professional ($800/mo), or ActiveCampaign Plus ($49/mo at 1,000 contacts) | HubSpot's free tools allow only 1 automated action and Starter up to 10 |
| A very large retailer with many channels | Braze or Iterable, both quote-based | Contract terms and the implementation work behind them |
Moving a shop to a new email tool in a month
| Week | Task for a store | Done when |
|---|---|---|
| 1 | Connect the shop (Shopify, WooCommerce or similar) and confirm products, orders and customers sync, then export your current list with consent dates | A test order shows up as an event with the right product and value |
| 2 | Rebuild the cart-recovery and welcome flows first, each with a purchase exit and a short cap on how many cart emails one customer can get | A test buyer who completes checkout stops receiving cart emails |
| 3 | Add post-purchase education and a review request, and move order confirmations into a separate transactional stream if you use Postmark or SendGrid | Order notices and promotions come from different streams |
| 4 | Switch the old tool's flows off one at a time and compare revenue per flow with the previous month | You can name the flow that earned the most and the one that annoyed customers |
What a good pilot actually measures
| Measurement trap | Why it misleads | Fix |
|---|---|---|
| Attributing every order to the last email clicked | A discount code in a cart email takes credit for purchases that were already likely | Hold out a small share of carts from the flow and compare |
| Comparing tools at 500 contacts | Mailchimp is $20/mo at 500 contacts but $100 at 5,000, and Klaviyo goes $20 to $100 across the same range | Price your list for next year, not today |
| Ignoring revenue after refunds | A flow that wins orders that get returned looks better than it is | Report revenue net of refunds for each flow |
| Judging browse emails by clicks | Clicks without a later order only prove curiosity | Measure orders per recipient over the following seven days |
Common implementation mistakes to avoid
- Running cart recovery and browse abandonment on the same customer in the same hour
- Leaving a discount code in the flow after a customer has already used it
- Importing a store's marketing list without separating customers who opted out at checkout
- Choosing an enterprise platform such as Braze or Iterable for a catalog a single marketer manages
Ecommerce email automation questions
Which email automation tool is best for an ecommerce store?
Klaviyo for most stores: it is free to 250 profiles, then $30/mo at 1,000 profiles, $100 at 5,000 and $150 at 10,000, with flows built around cart, order and product events. Omnisend suits stores that want SMS in the same flows, and Drip suits stores that want unlimited sends and per-flow revenue attribution.
What does ecommerce email automation cost at 10,000 contacts?
On each vendor's own pricing page, Klaviyo Email is $150/mo at 10,000 profiles, Drip is $154/mo at 10,000 people, Mailchimp Standard is $135/mo for 5,001 to 10,000 contacts, and ActiveCampaign Starter is $149/mo at 10,000 contacts.
Do I need a separate tool for order confirmation emails?
Often yes. A transactional sender such as Postmark or SendGrid's Email API keeps receipts and shipping notices apart from promotions, so a marketing pause or complaint spike does not delay order notices.
Is a free plan enough to start?
To test a welcome series, yes: Klaviyo and Mailchimp both offer free plans at 250 contacts or profiles, and Omnisend's free plan covers 250 contacts and 500 emails a month. A growing store will outgrow them quickly.
Before you build your first store flow
- Abandoned cart automation: how many cart emails to send, when to send them, and what should stop the sequence.
- Ecommerce email automation: how welcome, cart, post-purchase and win-back flows fit together in one shop.
- Best tools for ecommerce retention: the same question once the first orders are in and repeat purchase matters.