Sequenzy vs Klaviyo: Store Data or Subscription Data?
Sequenzy vs Klaviyo: Klaviyo for store data, Sequenzy for SaaS billing. Real prices at 1,000, 5,000 and 10,000 contacts, checked 7 Oct 2026.
Klaviyo is the better fit when your email runs on store data: carts, orders and a product catalogue from Shopify, WooCommerce or Wix. Sequenzy is the better fit when you sell software and your emails follow subscription events from Stripe, Paddle or Lemon Squeezy: a trial starting, an upgrade, a failed payment, a cancellation. They also bill differently. Klaviyo prices by the profiles you hold, Sequenzy by the emails you send with unlimited contacts, and that difference decides the bill for a large list you mail rarely.
The two tools side by side
| Sequenzy | Klaviyo | |
|---|---|---|
| Built around | Subscription billing events: Stripe, Paddle and Lemon Squeezy first, then Polar, Creem and Dodo Payments | Ecommerce platforms; its pricing page names Shopify, Wix and WooCommerce |
| Billing unit | Emails sent per month, unlimited contacts and sending domains on every plan | Profiles; the free plan counts "active profiles", contacts who may receive marketing emails |
| Free plan | 2,500 emails a month, every feature included, no credit card | Up to 250 active profiles and 500 emails a month, plus $5 of mobile messages and $5 of Composer usage a month |
| First paid readings | $19 a month for 15,000 emails | Email plan: $20 at 500 profiles, $30 at 1,000 profiles |
| SMS | SMS and MMS add-on, $16 a month with 1,000 credits, on the paid plans | SMS marketing product; the free plan includes $5 of mobile messages a month |
| Reporting and revenue | Revenue attribution and goal tracking on every plan | Built-in reporting and revenue attribution for campaigns, on the free plan |
| Automation and AI | Visual automation builder and AI-generated sequences | Automations and segmentation on the free plan; the Composer agent creates campaigns and flows from a prompt |
| Failed-payment emails | Dunning email on Stripe invoice.payment_failed, with a card-update page | Not listed on the pricing page |
| Transactional email API | Included; one API for transactional and marketing email | Not listed on the pricing page |
The rows come from Klaviyo's pricing page and Sequenzy's pricing page, read on 7 Oct 2026. "Not listed" means the pricing page does not mention it, which is weaker than "does not exist"; ask Klaviyo before you rule anything out.
Where Klaviyo is stronger
Start with the data model. Klaviyo's pricing page says its integrations cover ecommerce platforms, with Shopify, Wix and WooCommerce named, and that segmentation and automation are available even on the free plan. An email platform wired to a store knows what was ordered and when, which is the raw material for post-purchase and win-back flows. Sequenzy's pricing page also lists Shopify and a WooCommerce plugin in beta, but it does not say what either one syncs, so treat them as a way in, not as equal depth. We could not read Klaviyo's flow library or catalogue features on the pages we fetched, so we do not list individual store flows here; open the flow templates in a free account before you decide.
Second, text messages sit next to email in one account. The free plan lists $5 of mobile messages a month and SMS marketing is a product in its own right. Sequenzy sells SMS and MMS as an add-on, $16 a month with 1,000 credits on the paid plans, which works, but it is an extra line on the bill.
Third, the free plan reaches further than its size suggests. Up to 250 active profiles and 500 emails a month come with built-in reporting and dashboards, revenue attribution for campaigns, web forms, a drag-and-drop editor with basic templates and an AI subject-line generator. A shop that wants to see which campaign produced which order gets that for $0. Klaviyo's pricing page also lists a Helpdesk and a Composer AI agent that can audit performance and create campaigns and flows from a prompt, which matter if you want service tickets and marketing on one customer profile.
Where Sequenzy is the better fit
A software subscription has a different life cycle from a shopping basket. The events that matter are a trial starting, an upgrade, a failed charge and a cancellation, and Sequenzy is built to start sequences from them. Its pricing page lists Stripe (segment by MRR and LTV), Paddle and Lemon Squeezy among its integrations, and its home page says each event starts the right flow for a segment built from plan, MRR and engagement data.
The clearest case is a failed card. Sequenzy's home page says invoice.payment_failed starts dunning with a card-update page. That is the email half only: the schedule of retries stays in Stripe or Paddle, so you still configure retries there, and we make no claim about how many failed payments any email flow recovers. Cancellations can feed a win-back sequence, and our guide to trial conversion sequences shows where those events sit in a 14-day flow.
The other advantage is the billing unit. Sequenzy charges for emails sent and keeps contacts unlimited, so a product with 40,000 sign-ups where most people never get a marketing email does not pay for the silent majority. Every feature is on every plan, including the free one, so there is no tier to climb to reach the automation builder. It also includes a transactional email API, so password resets and receipts can share one account with the sequences.
Prices at 1,000, 5,000 and 10,000 contacts
Klaviyo's calculator reprices the Email plan as you change the profile count: the readings on 7 Oct 2026 were $20 at 500 profiles, $30 at 1,000, $100 at 5,000 and $150 at 10,000. Sequenzy has no contact count to enter, so the only input is how many emails you send. We assume 4 emails per contact a month, which is 4,000, 20,000 and 40,000 sends at the three list sizes. That is our assumption, not either vendor's figure; change it and the Sequenzy column moves, while the Klaviyo column does not.
| List size | Sends at 4 a month | Sequenzy tier that covers it | Sequenzy per month | Klaviyo Email plan per month |
|---|---|---|---|---|
| 1,000 contacts | 1,000 x 4 = 4,000 | 15,000 emails | $19 a month | $30 a month |
| 5,000 contacts | 5,000 x 4 = 20,000 | 30,000 emails | $29 | $100 |
| 10,000 contacts | 10,000 x 4 = 40,000 | 60,000 emails | $49 | $150 |
| 250 contacts, free tier | 250 x 4 = 1,000 | Free, 2,500 emails | $0 | Over the free cap of 500 emails (see below) |
The free row needs care. Klaviyo's free plan stops at 500 emails a month, so 250 profiles can each receive two emails a month there (250 x 2 = 500) and not four. Sequenzy's free tier allows 2,500 emails, so the same 1,000 sends cost nothing. A shop that sends four emails to 250 profiles outgrows Klaviyo's free plan; the first paid reading on its calculator is $20 at 500 profiles.
Profiles versus sends: which list shape favours which tool
Klaviyo charges for who is on the list. Sequenzy charges for what you send. Neither is cheaper in general, and the two examples below pull in opposite directions.
| List shape | Sends a month | Sequenzy | Klaviyo Email plan |
|---|---|---|---|
| 10,000 profiles, mailed twice a month | 10,000 x 2 = 20,000 | 30,000-email tier: $29 | 10,000 profiles: $150 |
| 1,000 profiles, mailed 40 times a month | 1,000 x 40 = 40,000 | 60,000-email tier: $49 | 1,000 profiles: $30 |
The first row is a big list you mail rarely: an old customer base, a long tail of sign-ups, a store with seasonal sends. The Klaviyo reading is $150 whether you mail it twice or twenty times, and Sequenzy comes to $29 for the same 20,000 sends, a difference of $121 a month. The second row is a small, busy list, such as a shop that adds campaign, cart, order and shipping emails until each profile gets about ten a week. There Sequenzy needs the $49 tier and the profile-based price of $30 is lower. We have not read a send cap on Klaviyo's Email plan calculator, so check that your volume fits before you rely on that row.
Two cautions on the Sequenzy side. Its pricing page describes volume as monthly email volume, so confirm in a trial whether transactional sends count towards your tier before you size it. And because contacts are unlimited, a bigger list costs nothing until you mail it, which suits a business that only emails an engaged slice of its audience.
Who should pick which
Pick Klaviyo if
- You run a store on Shopify, WooCommerce or Wix and your best emails depend on what people browsed, put in a cart or bought.
- You want SMS and email in one account from day one, and a free plan that includes reporting and revenue attribution for campaigns while the list is under 250 profiles.
- Your list is small and busy, so profile-based pricing costs less than paying per send.
Pick Sequenzy if
- You sell a subscription product and bill through Stripe, Paddle or Lemon Squeezy, and you want trial, upgrade, failed-payment and cancellation emails to start from billing events.
- You want a dunning email on
invoice.payment_failedwith a card-update page, and you are happy for Stripe or Paddle to keep the retry logic. - Your list is large and mailed rarely, so paying by emails sent beats paying by profile.
Pick neither if
- You run a sales-led B2B pipeline that needs a CRM next to the email: our Klaviyo vs ActiveCampaign comparison covers that choice from the Klaviyo side.
- You want to weigh a lean product-event tool against a store-focused one without either of these two: Loops vs Drip sets that out.
- You are leaving Klaviyo because of its profile pricing and want the full list of options: see Klaviyo alternatives.
Moving between them
From Klaviyo to Sequenzy
This move suits a store that has become a software business, or a Klaviyo account that is mostly a subscription audience. Plan on a rebuild, not a transfer.
- Export profiles with consent status. Take every profile together with its subscribed, unsubscribed and suppressed state, because an opt-out must follow the person to the new tool.
- Export lists and segments. Write down each segment's rule, since a segment built on order history has no equivalent until you send Sequenzy the matching events.
- Document every flow. A screenshot or a written map of each flow's trigger, delays, branches and exit conditions is the spec you rebuild from. Flows do not move across as files.
- Keep historical purchase events somewhere else. Store event history, such as orders and cart activity, does not carry over to a SaaS tool. Export it to a spreadsheet or your own database if you want it for reporting.
- Connect billing, then rebuild. Link Stripe, Paddle or Lemon Squeezy first, then recreate trial, upgrade and failed-payment sequences in Sequenzy and test each with a throwaway account. We have not read a page saying Sequenzy imports Klaviyo data directly, so plan for a manual import.
From Sequenzy to Klaviyo
The reverse move fits a software company that starts selling physical goods. Export subscribers with consent and suppression status, and note the tags and segments you use. Then connect the store platform in Klaviyo, rebuild your sequences there, and keep suppression lists in step during the overlap so nobody who opted out receives a second email. Klaviyo prices by profiles, so import only the contacts you actually mail: its free plan counts active profiles, meaning contacts who may receive marketing emails.
Frequently asked questions
Is Sequenzy cheaper than Klaviyo?
At 1,000, 5,000 and 10,000 contacts mailed four times a month, yes. Sequenzy comes to $19, $29 and $49 for those sizes, while the Klaviyo Email plan reads $30, $100 and $150. The order flips for a small list mailed very often, because Klaviyo counts profiles and Sequenzy counts sends, so work out your own sends per month before trusting either column.
Can I use Sequenzy for an online store?
Its pricing page lists a Shopify integration and a WooCommerce plugin marked beta, but it does not describe what store data they bring in. Its sequences are written around billing events such as trials, upgrades and failed payments. If your emails depend on carts, orders and catalogue items, start with Klaviyo, or run a trial of Sequenzy against one real store flow before you commit.
Does Klaviyo handle failed subscription payments?
Klaviyo's pricing page lists no billing-event or dunning feature, so we do not claim one. Sequenzy lists the opposite: on a Stripe invoice.payment_failed event it starts a dunning email flow with a card-update page, while the retry schedule itself stays in Stripe or Paddle. If failed-payment emails are your main job, that favours Sequenzy.
Can I run both tools together?
Yes, if you sell both products and software, for example a store plus a paid membership. The risk is two copies of one person: an unsubscribe in one tool must reach the other, so pick one system as the source of truth for consent and suppression and sync it deliberately. Otherwise keep each audience in one tool.