Klaviyo vs Brevo: Which Email Platform Fits Your Budget?

Your email bill can double the moment your list grows, and the two platforms in this comparison react to that growth in opposite ways. Klaviyo charges based on how many contacts sit in your account. Brevo charges based on how many emails you send. That single difference decides which one saves you money — and it flips depending on the size and shape of your audience.

Klaviyo is the data-heavy platform that ecommerce brands reach for when they want to squeeze revenue out of every send. Brevo is the multi-channel all-rounder from a European company, built to keep costs flat as your contact list climbs. Both handle email, SMS, and automation. They suit very different businesses, and picking the wrong one gets expensive fast.

Pricing: contacts vs sends

The pricing model matters more than any headline number, so start there.

Klaviyo bills on active profiles — every subscribed, non-suppressed contact in your account, whether or not you emailed them this month. Since the February 2025 billing change, contacts you never send to still count toward your tier. The free plan covers 250 contacts and 500 sends. The paid Email plan starts around $20/month for up to 500 contacts, and the Email + SMS plan starts around $35/month. Costs then climb steadily with list size. Verify the current figures on Klaviyo’s pricing page, since the tiers move often.

Brevo ignores contact count entirely. You can store unlimited contacts on every plan, including the free one, which allows 300 emails per day (roughly 9,000 a month). Paid plans are metered by monthly send volume: the Starter plan begins at around $9/month and includes from 5,000 emails, Standard adds automation and A/B testing, and Professional starts from 150,000 emails per month with 10 seats. Check live numbers on Brevo’s pricing page, because the plan names were restructured recently.

The math splits cleanly. If you have a large list that you email occasionally — a newsletter of 40,000 subscribers you write to twice a month — Brevo will be dramatically cheaper, because you pay for the modest send volume, not the big list. If you have a smaller, highly engaged list that you email constantly, Klaviyo’s per-contact model can actually work out fine, and you get far better analytics for the money.

The weakness on each side is real. Klaviyo gets expensive quickly for large or low-engagement lists, and the profile-based billing punishes you for holding onto contacts. Brevo’s daily send cap on the free plan (300/day) blocks any real launch campaign, and send-based pricing bites hard if you email a small list very frequently.

Ecommerce and automation

This is where Klaviyo earns its premium and where Brevo shows its limits.

Klaviyo was built for online stores. Its Shopify integration is among the deepest on the market, syncing product views, cart activity, purchases, refunds, and fulfillment events into flows you can branch on. Predictive analytics estimate each customer’s next order date, lifetime value, and churn risk. Revenue attribution shows exactly how much money each campaign and flow generated, which makes justifying the cost straightforward. The platform connects to 350+ apps, and newer AI tooling — Composer for building flows from a prompt, plus the K:AI assistant — is aimed squarely at speeding up campaign creation.

Klaviyo’s weakness is complexity. The dashboard buries newcomers in metrics, and the learning curve is steep. If you are not running an ecommerce store, most of that predictive machinery sits unused while you still pay for it.

Brevo takes a broader, shallower approach. It bundles email, SMS, WhatsApp, web push, a sales CRM with pipelines, live chat, and transactional email into one account. Its automation builder handles multi-step workflows, and higher tiers add contact scoring and Aura AI for segmentation. For a small business that wants marketing and light sales tooling in one place, that breadth is genuinely useful.

Brevo’s weakness is depth. Its ecommerce reporting does not approach Klaviyo’s revenue-per-email granularity, and its store integrations, while functional, feel less native. If your growth depends on getting more from ecommerce data, Brevo will leave money on the table.

Templates, editor, and ease of use

Day-to-day, the platform you actually enjoy using is the one your emails go out on.

Klaviyo’s email editor is polished and catalog-aware. Templates lean ecommerce, with dynamic product blocks that pull live items, prices, and images straight from your store. Building a good-looking promotional email is quick once your catalog is connected. The tradeoff is the wider interface: segmentation, flows, and analytics all carry their own learning curve, and a first-time user can spend a full day just wiring up tracking and their first flow before sending anything.

Brevo’s editor is simpler and faster to learn, which suits solo operators and small teams. The drag-and-drop builder and responsive templates get a clean campaign out the door in minutes, and an AI content generator drafts subject lines and copy on every plan. The weakness shows in polish and depth: Brevo’s templates feel more generic than Klaviyo’s, product-driven blocks are less sophisticated, and the sheer number of modules — marketing, CRM, chat, transactional — can make the dashboard feel cluttered when you only want to send a newsletter.

Deliverability and transactional email

Both platforms send reliably, but they serve different sending needs.

Brevo has a distinct advantage for transactional email. Every plan — including free — includes transactional sending through SMTP relay and API, with unlimited log retention. Developers can fire receipts, password resets, and order confirmations from the same account that runs marketing, which is convenient for small teams. Brevo is also a French company and a certified B Corp, and it markets heavily on GDPR alignment, which appeals to EU senders.

The catch: on shared IPs and free tiers, Brevo’s deliverability has historically been more variable than Klaviyo’s, and a dedicated IP sits behind higher plans. New senders should warm up carefully.

Klaviyo’s deliverability is strong, helped by its ecommerce focus and mature sending infrastructure. It handles transactional-style messages such as order and shipping notifications through flows, but it is not a general-purpose transactional email service the way Brevo’s SMTP relay is. If you need to send developer-triggered transactional mail at volume, Klaviyo is the wrong tool.

For a broader look at what drives inbox placement across platforms, see our guide to tools with the best deliverability.

Who should choose Klaviyo

Klaviyo is the better pick if you run an ecommerce store on Shopify, WooCommerce, or BigCommerce and you make most of your revenue from repeat customers. The predictive analytics, revenue attribution, and deep event tracking turn store data into targeted flows that measurably lift sales. Brands doing serious DTC volume tend to find the cost justified by the reporting alone.

Skip Klaviyo if you are budget-sensitive, hold a large list you email infrequently, or run something other than an online store. The profile-based billing and feature complexity work against you in all three cases. Read the full breakdown in our Klaviyo review and the tier-by-tier costs in our Klaviyo pricing guide.

Who should choose Brevo

Brevo is the better pick if you want predictable costs as your contact list grows, you send moderate email volume, or you need marketing plus a light sales CRM and transactional email in one account. Its unlimited-contacts model is a relief for anyone burned by per-subscriber pricing, and the multi-channel bundle covers small teams that cannot afford separate tools. EU-based senders who prioritize GDPR posture will also feel at home.

Skip Brevo if ecommerce analytics are your growth engine, if you need polished, catalog-driven email templates, or if you send high daily volume on the free plan and hit the 300-per-day wall. See our Brevo review for the full assessment.

The verdict

These two platforms rarely compete for the same buyer. Klaviyo is a specialist that rewards ecommerce brands with data they can turn into revenue, and it charges accordingly. Brevo is a generalist that keeps costs flat, bundles more channels, and asks less of your budget — at the price of shallower ecommerce depth and more variable deliverability.

Decide on your list shape and revenue source first. A DTC store with a small, engaged, purchase-driven audience should lean Klaviyo. A business with a large or slow-emailed list, a mixed channel strategy, or tight margins should lean Brevo. If you are still unsure, our roundup of the best email marketing tools for ecommerce puts both in context alongside their closest rivals.

Sources

1. Klaviyo — Pricing — accessed 2026-07-23
2. Brevo — Pricing — accessed 2026-07-23