The best Klaviyo alternative for an online store is Omnisend, for a large list on a small send volume Brevo, and for automation that keeps working once the journey leaves the storefront ActiveCampaign.
Most people reading this are not looking for a better store data model. They are looking at a bill calculated on profiles they never email, next to a revenue figure they no longer believe.
The short version
For most stores leaving Klaviyo the answer is Omnisend. It has the e-commerce flows, it adds SMS on the same plan, and it costs less.
Brevo if the problem is purely the bill and you hold a large list you email occasionally. ActiveCampaign if your business is a store plus services, courses or a B2B pipeline, because that is where store-shaped automation stops being enough. Nitrosend if you want Claude, Codex or Cursor to run the account and you want receipts and campaigns in one place. MailerLite for a lean catalogue and simple triggers. Mailchimp if you want the broad marketing suite and can live with per-contact billing.
If what you actually need is on-site popups, browse-abandonment tracking and revenue attributed to flows out of the box, stay. Klaviyo is still the deepest product for that job, and the rest of this page is about the cases where it is not.
Why people leave Klaviyo
Two things, and they compound.
The first is the contact tax. Klaviyo bills on active profiles, which is every subscribed contact in the account whether you email them or not. That model applied to existing and legacy accounts from 18 February 2025, with the resulting increase capped at 25% at rollout. The free tier is 250 active profiles and 500 email sends a month, and paid starts at $20 a month for 251 to 500 profiles, read from the pricing page on 7 September 2026. An agency running a client with 100,000 profiles who only emails 30,000 of them pays for all 100,000. Nick, who answers our support and deliverability questions, notes that Klaviyo also rebuilt a pricing page structure the whole category had settled on, which does not help anyone trying to work out their own number.
The second is the figure that is supposed to justify the bill.
Klaviyo's default attribution is a seven-day view window that counts opens, and Apple Mail Privacy Protection pre-loads images, so a person who never saw an email can still be credited with the purchase. One agency ran the weekly numbers for a client's new finance lead. The attributed revenue came to exactly twice what the business actually took that week.
This is not only a Klaviyo problem, and I will not pretend otherwise. What follows is what we see in our own sending data rather than a published industry figure. Open tracking now drops the vast majority of real opens, because the pixel is blocked, the open is classified by Apple, or it is simply never recorded, while Gmail and Yahoo image-proxy fetches get counted as opens that never happened. Apple has gone further and strips UTM parameters in Mail, so the click data is thinning out too. Raw email analytics are getting less reliable across every platform as Apple, Google and Microsoft reduce what they will report.
We hit the same class of problem in our own product, twice. Kam, my co-founder, who built the platform, found that clicks were outrunning opens on some accounts because security scanners like Proofpoint, Mimecast and Safe Links fetch every link without loading the pixel, so he added a conservative scanner filter to click tracking and deliberately left opens alone, since Gmail's image proxy is a legitimate open signal. Nick found a worse one on our side: an attribution field that could structurally never populate, which left campaign and per-message revenue permanently at zero. We fixed it and said so.
The difference is what the number is used for. Ours was broken and reported nothing. Klaviyo's is generous by default and reports a number your board will quote.
The rest of the criticism is quieter and comes from practitioners who still use it daily. Since the IPO it has been widely called overpriced, with complaints aggregated on G2 that analytics people expect to be included are charged for, and there is a paid AI assistant that does not have access Claude or Codex lack. None of that is a reason to leave on its own. It is the reason people who have already priced the active-profile bill start looking.
How they compare
Scores are out of 10 against criteria whose weights add to 100. They are published in full at the bottom of this page, so you can disagree with a weight and re-rank the table yourself.
Prices were read from each vendor's own pricing page on 7 September 2026 and they move often.
We make Nitrosend. It is second here rather than first, because we have no on-site popups and no browse-abandonment tracking, which are the two things a Klaviyo user misses on day one.
Klaviyo alternatives compared
Checked| Platform | Rank | Best for | Pricing model | Free tier | From | At 10k contacts | Score |
|---|---|---|---|---|---|---|---|
| Nitrosend Agent-native | 1 | Agent-driven email | per send | 8,000 emails to start, then 500 a month | $20/mo | n/a | 8.8 |
| Omnisend | 2 | E-commerce value | per contact | 250 contacts, 500 emails a month | $16/mo | $132/mo (Standard) | 8.1 |
| Brevo | 3 | Budget volume | per send | 300 emails a day, unlimited contacts | $9/mo | n/a | 8.0 |
| ActiveCampaign | 4 | Beyond the store | per contact | 14-day trial | $15/mo | $149/mo (Starter) | 7.8 |
| MailerLite | 5 | Small catalogues | per contact | 250 subscribers, 2,500 emails a month | $12/mo | $89/mo (Comfort) | 6.7 |
| Mailchimp | 6 | All-in-one suite | per contact | 250 contacts, max 500 emails/mo or 250/day | $13/mo | $135/mo (Standard) | 6.7 |
1. Omnisend
Best for: Shopify and WooCommerce stores that want Klaviyo's automation shape at a lower price.
Pre-built store flows, behavioural segmentation, and email, SMS and web push in one automation rather than three products. For most stores under about 10,000 contacts this is the straight swap, and the reason it tops the list is that it does not ask you to give anything up to save money.
Free to 250 contacts and 500 emails a month. The one caution on the entry price in the table is that the pricing page was showing a 30% promotional discount when we read it, so treat that figure as promotional until you have your own quote. Reporting is thinner than Klaviyo's and the integration list is shorter outside the main platforms.
- Omnisend at a glance
- Verified on the vendor's own pages
- Best for
- Shopify and WooCommerce stores that want Klaviyo's automation depth for less
- Pricing model
- per contact
- Free tier
- 250 contacts, 500 emails a month
- Entry paid plan
- $16/mo (500 contacts, 3,000 emails a month, unlimited web push notifications; billed monthly)
- At 10,000 contacts
- $132/mo (Standard)
- Transactional API
- yes
- Marketing campaigns
- yes
- Automation flows
- yes
- SMS
- yes
- Inbound email parsing
- no
- Support
- Help center: support.omnisend.com
- Developer docs
- API documentation: api-docs.omnisend.com
- Status page
- System status: status.omnisend.com
- Pricing page
- Current pricing: omnisend.com/pricing
- Founding team
- Rytis Lauris co-founded Omnisend in 2014 and is still chief executive. A second co-founder is named only by Wikipedia and appears nowhere on the company's own site.
- Founding team score
- 5.25 of 10 on the founding-team criterion
- AI-native capability
- Not independently assessed for MCP/agent access, on-brand design generation, or ChatGPT marketplace listing in this comparison.
- AI-native score
- 2 of 10 on the AI-native criterion
- Limitations
- Reporting is thinner than Klaviyo's
- The entry price on the page was a promotional figure
- Fewer integrations outside the main platforms
- Facts checked
2. Nitrosend
Best for: teams that want an AI agent operating email, and stores that refuse to run two vendors for one sending domain.
You connect Nitrosend to Claude, Codex or Cursor over MCP and run the account by asking for what you want: build the flow, segment the list, send the campaign, tell me what happened. The MCP server exposes 28 nitro_* tools, and nothing sends without you approving it. Transactional and marketing live in one account with the streams separated internally, so an order confirmation is never queued behind a promotion. Pricing is pay per send with unlimited contacts on every tier, so the 100,000-profile list that sets your Klaviyo bill costs nothing to hold here. Free is 8,000 emails to start then 500 a month, with full API, MCP and CLI access, and paid starts at $20 a month for 20,000 emails.
Where it loses, and this is the reason it is second here and not first. We have no on-site popups and no browse-abandonment tracking, which are the two things a Klaviyo user will miss on day one. There is no inbound email parsing over REST. We do not do cold outreach. And at enterprise send volumes we are more expensive than Klaviyo, which our own team says out loud rather than hiding in a footnote. If you want the point-by-point version, we keep a Nitrosend and Klaviyo comparison.
- Nitrosend at a glance
- Verified on the vendor's own pages
- Best for
- teams that want Claude, Codex or Cursor to run the account and refuse to split one sending domain across two vendors
- Pricing model
- per send
- Free tier
- 8,000 emails to start, then 500 a month
- Entry paid plan
- $20/mo (20,000 emails a month, 5 brands, 3 domains, up to 1,000 / 10,000 / 100,000 recipients per rolling 24 hours for Pro Probation / Standard / Trusted)
- At 100,000 emails a month
- $100/mo (Ultra)
- Transactional API
- yes
- Marketing campaigns
- yes
- Automation flows
- yes
- SMS
- yes
- First-party MCP server
- yes
- Inbound email parsing
- no
- Support
- Help center: docs.nitrosend.com
- Developer docs
- API documentation: docs.nitrosend.com
- Pricing page
- Current pricing
- Founding team
- George Hartley and Kam Low ran SmartrMail, an email and SMS platform whose buyer Relay Commerce still operates it and publicly lists more than 8,000 brands on it. Kam Low's open-source record runs from 2009 under the Sourcey organisation. All three founders are in post.
- Founding team score
- 9.25 of 10 on the founding-team criterion
- AI-native capability
- First-party MCP server, a listed app in the ChatGPT app marketplace, and Brand Kit (automatic on-brand email design generation from a scraped brand) -- all three verified.
- AI-native score
- 10 of 10 on the AI-native criterion
- Limitations
- No on-site popups or browse-abandonment tracking
- No inbound email parsing over REST
- More expensive than Klaviyo at enterprise send volumes
- No cold outreach
- Facts checked
3. ActiveCampaign
Best for: businesses that are a store plus something else, such as services, courses or a B2B pipeline.
When your customer journey leaves the storefront, Klaviyo's data model stops helping and ActiveCampaign's starts. Multi-step branching, a genuine CRM, and deep third-party integrations. No free tier, only a 14-day trial, with Starter listing at $15 a month for 1,000 contacts on annual billing.
Then check the curve before you move. The same Starter plan lists at $149 a month at 10,000 contacts, and new accounts opened from November 2025 are billed on all contacts including unsubscribed, bounced and unconfirmed, which is a stricter contact tax than the one you are leaving. More on the ActiveCampaign alternatives page.
- ActiveCampaign at a glance
- Verified on the vendor's own pages
- Best for
- businesses that are a store plus services, courses or a B2B pipeline
- Pricing model
- per contact
- Free tier
- 14-day trial
- Entry paid plan
- $15/mo (1,000 email contacts, 1 user, limited segmentation, 5 actions per automation; billed annually)
- At 10,000 contacts
- $149/mo (Starter)
- Transactional API
- yes
- Marketing campaigns
- yes
- Automation flows
- yes
- SMS
- yes
- Inbound email parsing
- no
- Support
- Help center: help.activecampaign.com
- Developer docs
- API documentation: developers.activecampaign.com
- Status page
- System status: status.activecampaign.com
- Pricing page
- Current pricing: activecampaign.com/pricing
- Founding team
- Jason VandeBoom founded ActiveCampaign in 2003 and is still chief executive after thirteen bootstrapped years and three funding rounds.
- Founding team score
- 7.00 of 10 on the founding-team criterion
- AI-native capability
- Not independently verified for MCP/agent access in this comparison; no on-brand automatic design generation or ChatGPT app marketplace listing found in a light spot-check.
- AI-native score
- 2 of 10 on the AI-native criterion
- Limitations
- Cost climbs steeply with contact count
- New accounts are billed on all contacts including unsubscribed and bounced
- No free tier, only a 14-day trial
- Facts checked
4. Brevo
Best for: a big list emailed occasionally, on the smallest bill.
Brevo prices on emails sent rather than profiles stored, which is the direct fix for the contact tax, and its free tier has no contact ceiling at 300 emails a day. Paid starts at $9 a month from 5,000 emails. SMS, WhatsApp, chat and a basic CRM come in the bundle.
The trade is real. The e-commerce flows are shallower than Omnisend's, there is no on-site behaviour tracking of the kind you are used to, and Brevo enforces its sending thresholds automatically and fast, taking the account reporting with it. We wrote that up on the Brevo alternatives page.
- Brevo at a glance
- Verified on the vendor's own pages
- Best for
- a large list emailed occasionally, on the smallest bill
- Pricing model
- per send
- Free tier
- 300 emails a day, unlimited contacts
- Entry paid plan
- $9/mo (from 5,000 emails a month)
- Transactional API
- yes
- Marketing campaigns
- yes
- Automation flows
- yes
- SMS
- yes
- First-party MCP server
- yes
- Inbound email parsing
- yes
- Owner
- Brevo (formerly Sendinblue, independent)
- Support
- Help center: help.brevo.com
- Developer docs
- API documentation: developers.brevo.com
- Status page
- System status: status.brevo.com
- Pricing page
- Current pricing: brevo.com/pricing
- Founding team
- Armand Thiberge founded Brevo in 2012 and is still chief executive, though ownership is now heavily institutional after the December 2025 round.
- Founding team score
- 5.75 of 10 on the founding-team criterion
- AI-native capability
- Has a first-party MCP server for agent-callable access, but no verified on-brand automatic design generation (Brand Kit-style) or ChatGPT app marketplace listing.
- AI-native score
- 4 of 10 on the AI-native criterion
- Limitations
- E-commerce flows are shallower than Omnisend's
- No on-site behaviour tracking
- Enforcement is automatic and takes the reporting with the account
- Facts checked
5. MailerLite
Best for: lean startups and small catalogues that mostly send newsletters.
A clean editor, easy subscriber management and basic store triggers, free to 250 subscribers and 2,500 emails a month with the Comfort plan at $12 a month. If your store is small and your email is mostly a newsletter with the occasional product push, Klaviyo was probably always more product than you needed.
It is still per-contact billing, the store triggers are basic next to Omnisend's, and API and MCP sending are paid-plan only, which its own pricing page states.
- MailerLite at a glance
- Verified on the vendor's own pages
- Best for
- lean startups and small catalogues that mostly send newsletters
- Pricing model
- per contact
- Free tier
- 250 subscribers, 2,500 emails a month
- Entry paid plan
- $12/mo (up to 500 subscribers, 5,000 monthly emails, 3 user seats, 24/7 email support)
- At 10,000 contacts
- $89/mo (Comfort)
- Transactional API
- yes
- Marketing campaigns
- yes
- Automation flows
- yes
- SMS
- no
- First-party MCP server
- yes
- Inbound email parsing
- no
- Support
- Help center: mailerlite.com/help
- Developer docs
- API documentation: developers.mailerlite.com
- Status page
- System status: status.mailerlite.com
- Pricing page
- Current pricing: mailerlite.com/pricing
- Founding team
- No founder is named on any first-party source. Vercom S.A., listed in Warsaw, acquired MailerLite in 2022 for 90 million dollars.
- Founding team score
- 2.75 of 10 on the founding-team criterion
- AI-native capability
- Not independently assessed for MCP/agent access, on-brand design generation, or ChatGPT marketplace listing in this comparison.
- AI-native score
- 2 of 10 on the AI-native criterion
- Limitations
- Still bills per contact
- Store triggers are basic next to Omnisend's
- API and MCP sending are paid-plan only
- Facts checked
6. Mailchimp
Best for: stores that want the broad marketing suite in one dashboard.
Segmentation, landing pages, social posting and the largest template and integration ecosystem in the category. As a store platform it is behind both Klaviyo and Omnisend, and it is here because plenty of small merchants genuinely want the suite rather than the depth.
Price it before you move. The free plan is 250 contacts and 500 emails a month, Essentials starts at $13 a month for 500 contacts, and at 10,000 contacts Standard lists at $135 a month. It bills on contacts including unsubscribed ones until you archive them, so you are swapping one stored-list tax for another. Our full write-up is on the Mailchimp alternatives page.
- Mailchimp at a glance
- Verified on the vendor's own pages
- Best for
- small merchants who want the whole suite rather than store depth
- Pricing model
- per contact
- Free tier
- 250 contacts, max 500 emails/mo or 250/day
- Entry paid plan
- $13/mo (0-500 contacts, monthly email sends 10x contacts, 3 seats, 3 audiences, up to 4 flow steps)
- At 10,000 contacts
- $135/mo (Standard)
- Transactional API
- yes
- Marketing campaigns
- yes
- Automation flows
- yes
- SMS
- yes
- Inbound email parsing
- no
- Owner
- Intuit
- Support
- Help center: mailchimp.com/help
- Developer docs
- API documentation: mailchimp.com/developer
- Status page
- System status: status.mailchimp.com
- Pricing page
- Current pricing: mailchimp.com/pricing/marketing
- Founding team
- Ben Chestnut and Dan Kurzius bootstrapped Mailchimp from 2001 to a twelve billion dollar sale to Intuit in 2021. Chestnut stepped down in 2022 and an Intuit senior vice president runs it.
- Founding team score
- 4.25 of 10 on the founding-team criterion
- AI-native capability
- Not independently verified for MCP/agent access in this comparison; no on-brand automatic design generation or ChatGPT app marketplace listing found in a light spot-check.
- AI-native score
- 2 of 10 on the AI-native criterion
- Limitations
- Weaker store automation than both Klaviyo and Omnisend
- Bills on contacts including unsubscribed ones until archived
- Costs climb quickly as the stored list grows
- Facts checked
Which Klaviyo alternative is best for a Shopify store on a tight budget?
Omnisend, in most cases. It carries the same shape of e-commerce automation, adds SMS on the same plan and starts far below Klaviyo, and it is free to 250 contacts while you test it. Brevo is cheaper again if your list is large and your send frequency is low, because it charges on emails sent rather than profiles held, but its store flows are shallower and you will notice the missing on-site tracking. Whichever you pick, compare at your real profile count, not at the entry tier, because that is where the two models diverge.
Will I lose my revenue attribution if I leave Klaviyo?
You will lose the number, and you should expect the new number to be lower. Klaviyo's default seven-day view window counts opens, and Apple Mail Privacy Protection pre-loads images, so purchases get credited to emails nobody read. A platform with a click-based or shorter window will report less revenue for identical sales. Before you migrate, re-run your last quarter in Klaviyo on a click-based attribution setting so you have a like-for-like baseline. Otherwise the drop looks like a performance problem when it is a counting change.
Can I keep Klaviyo for SMS and move only email?
Yes. It takes DNS: the new sender's DKIM record alongside Klaviyo's, and both senders in the one SPF record on your sending domain. Klaviyo keeps the SMS profiles, the new platform takes the email sending, and you move one message type at a time. The thing to watch is the bill, because active profiles keep counting while the account is open, so a split stack can cost more than either option alone until you prune the Klaviyo side down to the people you actually text.
How to move off Klaviyo without losing deliverability
- Export profiles with engagement history and purchase history, not just email addresses. Engagement history is what lets you pick a safe first segment.
- Verify the list. Old store profiles rot faster than newsletter subscribers, and the email blacklist checker tells you what you are carrying.
- Authenticate the new sender, with both senders in one SPF record during the overlap. The email authentication guide covers the records.
- Rebuild the money flows first: welcome, abandoned cart, post-purchase. Everything else can wait.
- Warm up rather than cutting over in one send. How to warm up an email domain has the ramp, and run an inbox placement test before the first big campaign.
- Keep Klaviyo open and read-only for one billing cycle so you can compare like for like before you cancel.
FAQ
What is the best Klaviyo alternative?
Omnisend for most online stores, because it covers the same e-commerce automation at a lower price. Brevo if the driver is cost on a large, rarely emailed list. ActiveCampaign if your automation runs past the storefront into services or B2B. Nitrosend, which we make, if you want an AI agent operating the account and transactional mail in the same place. MailerLite for a small catalogue.
Why did my Klaviyo bill go up?
Most likely because of active-profile billing, which charges for every subscribed profile whether or not you email it. That model was applied to existing and legacy accounts from 18 February 2025, with the increase capped at 25% at rollout. A list that grows through a busy quarter raises the bill even if your sending stays flat.
Is Klaviyo's revenue attribution accurate?
It is generous by default. The standard setting is a seven-day view window that counts opens as views, and Apple Mail Privacy Protection pre-loads images, so people who never saw an email can be credited with the sale. One agency's weekly report for a client came to exactly twice the revenue the business took that week. Change the window and the attribution model before you judge any platform against it.
Is there a free Klaviyo alternative?
Yes, with different caps. Omnisend is free to 250 contacts and 500 emails a month. MailerLite is free to 250 subscribers and 2,500 emails. Brevo has no contact ceiling and allows 300 emails a day. Mailchimp is free to 250 contacts and 500 emails. Nitrosend gives 8,000 emails to start, then 500 a month, with unlimited contacts and full API, MCP and CLI access on the free plan.
Can Nitrosend replace Klaviyo for an e-commerce store?
Partly, and you should know the gaps before you try. Campaigns, flows, segments, transactional sending and unlimited contacts in one account, driven by an AI agent if you want. What is missing is on-site popups and browse-abandonment tracking, which are core Klaviyo features for a store. If those two are load-bearing for you, Omnisend is the better move.
Do my Klaviyo flows transfer?
No. Flows are rebuilt on every platform because each one models triggers and conditions differently. Budget the rebuild for the two or three flows that actually earn money, keep the old account open and read-only for a cycle, and compare the numbers on the same attribution setting before you decide the migration worked.
How this list is ranked
Seven criteria, weighted, adding to 100. Store fit carries the most weight because that is what Klaviyo is for.
- E-commerce fit, 26%. Store triggers, on-site behaviour, revenue reporting.
- Pricing model honesty, 21%. Whether the bill tracks the sending or the stored list.
- Automation depth, 13%. How far the flows go before you hit a wall.
- Measurement you can trust, 13%. Attribution defaults and what the platform counts as an open.
- Agent and API surface, 8%. Whether software can operate the account.
- Migration cost, 4%. What it takes to move profiles, flows and history.
- Founding team and track record, 15%. Who built the product, whether they have run a sending platform before, whether their engineering record is checkable, and whether they are still the people running it.
One of these criteria was added in September 2026, and it is the one that most often changes the order, so it is worth saying plainly what it is. Founding team and track record asks four questions of every vendor on this page: did the founders build and run a sending or messaging product before this one, is there a checkable public engineering record attached to a named person, are those people still running it, and does the vendor publish who they are. Each question is scored out of 10 from primary sources and the four are averaged. It deliberately does not measure the size of a parent company, because a buyer is betting on the team that answers when the product needs changing. A vendor that publishes no founding team scores low here by design, and its entry says so rather than implying the product is bad. Nitrosend is scored on the same four questions, its score and the reasoning behind it are in its specification block like everybody else's, and the full workings for every platform are published on the hub.