Brevo vs Klaviyo in 2026: Budget multichannel vs the full eCommerce CDP stack
Brevo keeps contact storage free and charges for sends. Klaviyo bets on a built-in customer data platform, AI agents, and deep Shopify integration, and prices by profile count to fund it.
Brevo
Klaviyo- Brevo prices by emails sent with unlimited contact storage; Klaviyo prices by active profile count, which scales up quickly for stores with large but low-engagement lists.
- Klaviyo includes a built-in Customer Data Platform processing 2.5 billion events and 1.6 billion API calls per day across 7.3 billion profiles; Brevo has no equivalent CDP layer.
- Klaviyo ships a native MCP server on all plans, letting teams access Klaviyo data directly inside Claude or ChatGPT; Brevo has no MCP server or equivalent AI-tool data access.
- Brevo covers WhatsApp campaigns and live chat alongside email and SMS; Klaviyo's channel list is email, SMS, RCS, WhatsApp, mobile push, and social, actually a broader published channel set than Brevo's.
- Brevo has a genuinely free plan with unlimited contacts and 300 emails per day; Klaviyo's free plan is capped at 250 active profiles and 500 email sends per month.
- Klaviyo's Customer Agent resolves 65% of support questions autonomously according to Klaviyo's own reporting; Brevo has no AI customer service agent, only an Aura AI Sales Assistant for its CRM.
- Klaviyo lists 350+ pre-built integrations with deep native Shopify support; Brevo does not publish a comparable integration count and has no dedicated eCommerce platform depth to match.
Brevo and Klaviyo both automate email and SMS, but they are not really priced or built for the same customer. Brevo charges by emails sent with contact storage free on every paid plan, which keeps costs predictable for businesses with large, unevenly engaged lists, and rounds that out with WhatsApp, live chat, and a CRM. Klaviyo charges by active profile count and spends that revenue on a genuinely built-in customer data platform processing 2.5 billion events a day, an AI Marketing Agent that builds campaigns from a website URL, a Customer Agent handling support autonomously, and a native MCP server for pulling Klaviyo data into Claude or ChatGPT. Brevo has no CDP and no AI agent layer to match; Klaviyo has no WhatsApp channel and no send-based pricing to soften the cost of a large list. The decision mostly comes down to whether your business is eCommerce-shaped enough to need Klaviyo's data depth, and whether your budget can absorb per-profile pricing as the list grows.
The tools at a glance
Brevo
All-in-one email, SMS, WhatsApp, and CRM platform priced by emails sent, not contacts stored.
Brevo's entire pricing logic runs against Klaviyo's. Store as many contacts as you want at no extra cost, and pay only for the emails that actually go out. A brand with a 100,000-contact list that mails a segment of 10,000 per campaign pays for that segment, which is precisely the scenario where Klaviyo's per-profile pricing gets expensive fast.
Beyond pricing, Brevo genuinely covers more ground than a pure email tool: SMS, WhatsApp, live chat, push notifications, and a CRM with contact scoring at Professional all live in the same dashboard, combinable into cross-channel automations from the Standard tier. The AI content generator handles subject lines and body copy, and the Aura AI Sales Assistant helps draft outreach inside the CRM, though neither approaches the scope of a dedicated customer data platform.
What Brevo does not have is any data infrastructure comparable to Klaviyo's CDP. There is no unified real-time event stream feeding predictive analytics, no churn-risk scoring, and no MCP server for AI-tool access to your marketing data. For a brand whose entire strategy depends on real-time behavioral segmentation, that absence matters more than the pricing advantage.
| Feature | Free $0 | Starter From $9/mo | Standard From $18/mo | Professional From $539/mo |
|---|---|---|---|---|
| Monthly email sends | 300/day | From 20k | From 20k | From 150k |
| Contact storage | Unlimited | Unlimited | Unlimited | Unlimited |
| Marketing automation | ✗ | ✗ | ✓ | ✓ |
| WhatsApp and push | ✗ | ✗ | ✗ | ✓ |
| AI content generator | ✓ | ✓ | ✓ | ✓ |
| Built-in CDP | ✗ | ✗ | ✗ | ✗ |
Klaviyo
The autonomous B2C CRM unifying customer data, AI agents, and omnichannel campaigns in one platform.
Klaviyo's bet is that eCommerce brands need more than an email tool, they need a real-time data layer underneath it. The Klaviyo Data Platform unifies behavioral, transactional, and engagement data across every touchpoint as it happens, so a customer who abandons a cart or completes a purchase moves between flows instantly rather than waiting on the next batch sync. That data feeds predictive analytics too: expected next order date, churn risk, and lifetime value estimates are built in rather than something you calculate separately.
K:AI is the layer sitting on top of that data. Marketing Agent reads a brand's website and builds campaigns, flows, and sign-up forms from it directly, and Customer Agent handles support queries around the clock, resolving 65% of them without a human according to Klaviyo's own figures. The native MCP server extends that further, exposing Klaviyo data to Claude, ChatGPT, or any MCP-compatible tool a team already uses, which is a genuinely unusual capability among marketing platforms in this category.
That depth comes at a cost that scales with list size rather than send volume. Pricing is based on active profile count, so a brand with 200,000 low-engagement contacts pays for all of them regardless of how many actually get emailed each month, the opposite of Brevo's model. The learning curve is real too: newcomers commonly underuse the segmentation and flow capabilities simply because there is more platform to learn.
| Feature | Free $0/mo | Email From ~$20/mo | Email + SMS From ~$35/mo | Enterprise Custom |
|---|---|---|---|---|
| Active profiles | 250 | Scales by list size | Scales by list size | Custom |
| Marketing Agent (K:AI) | ✓ | ✓ | ✓ | ✓ |
| Customer Agent | ✗ | ✗ | Add-on | ✓ |
| MCP server access | ✓ | ✓ | ✓ | ✓ |
| Advanced CDP features | ✗ | ✗ | ✗ | ✓ |
| Email support | 60 days only | ✓ | ✓ | Dedicated team |
Head-to-head feature comparison
| Feature | Brevo | Klaviyo |
|---|---|---|
| Pricing model | By emails sent, unlimited contacts | By active profile count |
| Free tier limits | Unlimited contacts, 300 emails/day | 250 profiles, 500 email sends/month |
| Built-in CDP | No | Yes, processes 2.5 billion events/day |
| AI campaign generation | Yes, AI content generator for copy | Yes, Marketing Agent builds from your website URL |
| AI customer support agent | No, only an AI Sales Assistant inside the CRM | Yes, Customer Agent resolves 65% autonomously |
| MCP server / AI-tool data access | No | Yes, native MCP server on all plans |
| Channels covered | Email, SMS, WhatsApp, live chat, push | Email, SMS, RCS, WhatsApp, mobile push, social |
| Shopify integration depth | Not a dedicated integration; general eCommerce connectors | Yes, native and deep, category benchmark |
| Predictive analytics | No | Yes, churn risk, LTV, next-order date |
| Entry paid price | $9/mo | ~$20/mo |
Which should you choose?
KlaviyoBrevoKlaviyoBrevoKlaviyoBrevoKlaviyoBrevo and Klaviyo are both credible platforms, but they made different bets on where to spend engineering effort. Klaviyo spent it on data infrastructure and AI agents, building a CDP most competitors do not attempt and pricing accordingly by profile count. Brevo spent it on channel breadth and predictable send-based pricing, and it shows: Brevo has no answer to Klaviyo's CDP, and Klaviyo has no answer to Brevo's free unlimited-contact plan or its cheaper economics for a large, thinly-engaged list.
Bottom line
Choose Klaviyo if you run an eCommerce brand where real-time behavioral data and predictive analytics translate directly into revenue, and you can model per-profile costs before scaling. Choose Brevo if your list is large and unevenly engaged, your budget favors predictable send-based pricing, or WhatsApp and live chat matter more to you than a customer data platform. A DTC brand that has actually outgrown basic segmentation will feel Klaviyo's CDP as a real advantage rather than a nice-to-have, so do not pick Brevo on price alone if that describes your stage.
Frequently asked questions
Is Klaviyo worth the higher cost compared to Brevo for a small Shopify store?
It depends on how much your store actually relies on real-time behavioral triggers like abandoned cart or browse abandonment flows tied to live order data. Klaviyo's native Shopify integration and built-in CDP make those flows more precise, but a small store just starting out may not yet generate enough volume to justify per-profile pricing over Brevo's free unlimited-contact plan, which costs nothing until you need automation at the $18/month Standard tier.
Does Brevo have anything like Klaviyo's MCP server for AI tools?
No, Brevo has no MCP server or equivalent feature for exposing marketing data directly to AI assistants like Claude or ChatGPT. Klaviyo ships this natively across all its plans, letting teams query customer data or build automations using natural language inside an AI tool they already use, a capability unique to Klaviyo in this comparison.
Why does Klaviyo pricing get expensive so fast compared to Brevo?
Klaviyo prices by active profile count rather than by emails sent, so a list of 200,000 contacts costs the same whether you email all of them weekly or only a filtered segment occasionally. Brevo's send-based pricing means storing that same 200,000-contact list costs nothing extra, and you only pay for the volume you actually mail, which is why large, unevenly engaged lists get expensive on Klaviyo much faster than on Brevo.
Can Brevo replace Klaviyo's Customer Agent for handling support automatically?
Not really. Brevo has an Aura AI Sales Assistant that helps draft sales emails and enrich CRM contacts, but nothing equivalent to Klaviyo's Customer Agent, which resolves support queries around the clock and handles returns and product questions using full order history context. A brand that wants AI-driven customer service integrated with marketing data specifically needs Klaviyo's Service layer for that.
Does Klaviyo support WhatsApp campaigns the way Brevo does?
Yes, Klaviyo lists WhatsApp among its supported channels alongside email, SMS, RCS, mobile push, and social, actually a broader published channel list than Brevo's. Both platforms support WhatsApp, so that specific channel is not a differentiator between them; the difference shows up more in Klaviyo's data layer and Brevo's pricing model.
Which tool is better for a business that is not eCommerce?
Brevo is generally the better fit for non-eCommerce use cases like B2B lead nurturing, SaaS onboarding, or general newsletter sending, since much of Klaviyo's design, the CDP, predictive LTV scoring, deep Shopify sync, is built around retail behavioral data that a non-commerce business will not generate. Klaviyo can technically serve other B2C use cases like subscription services, but its flow templates and data model are retail-oriented by default.