Klaviyo is your CRM. Releva is your sales agent.
Keep Klaviyo for your email and SMS program. Releva adds search, recommendations and a catalog chat for every visitor on your site. Move one flow and compare.
- Checked on Klaviyo's site and help center, 29 September 2026
Klaviyo calls itself "the autonomous B2C CRM". It runs email, SMS, WhatsApp and mobile push, with predictions, product feeds, holdout groups, ad audiences and two AI agents: Composer and Customer Agent. It reports more than 205,000 paying customers.
Releva is an autonomous sales agent for B2C stores. It sells to every visitor on your site with personalized search, recommendations and a catalog chat. It brings customers back by email, push, SMS, Viber and WhatsApp, and builds ad audiences, toward the goal you choose.
Keep Klaviyo. Releva runs next to it: start on your site and with one flow, then compare the orders. Klaviyo's on-site personalization centers on identified visitors, and we found no site search product. Releva sells to every visitor, adds web push and Viber, and works with Gomag and MerchantPro.
What changes in your store
Sells on the site, to every visitor
- Releva: personalized search as shoppers type, recommendations on every page and a chat that answers from your live catalog.
- Klaviyo: personalized banners, content blocks and recommendations for identified visitors; its help center says anonymous visitors see generic recommendations from Shopify. We found no site search product; its marketplace lists partners such as Algolia and Doofinder.
Orders you can check in your store
- Releva: every attributed order is counted once, downloadable with the clicks before it, and open in your store. A holdout group shows what it added.
- Klaviyo: by default credits an order to the last email opened or clicked within 5 days, Apple's automatic opens included, or a text within 12 hours. Revenue includes shipping and doesn't subtract refunds. Global holdout groups need at least 400,000 profiles.
Channels, loyalty and platforms for your market
- Releva: web push and Viber next to email, SMS, app push and WhatsApp. A loyalty program with points and vouchers, built in. Gomag and MerchantPro as well as Shopify.
- Klaviyo: mobile push only, per its help center. We found no Viber channel. Its SMS list of 23 countries doesn't include Bulgaria, Romania, Greece or Southeast Asia. Loyalty points come through Yotpo or Smile.io; Gomag and MerchantPro aren't listed.
Klaviyo and Releva, row by row
| Klaviyo | Releva | |
|---|---|---|
| Knowing the shopper | ||
| Customer profiles | Profiles with custom events and their properties, and segments on them. On-site tracking follows "known browsers", identified through a Klaviyo message, form, login or checkout. | One profile per shopper: the ad or search that brought them, site and app activity, chat questions, messages and orders. |
| Predictions | Spend over the next year, churn risk and next order date, from 500 customers with orders. A next best product for each customer. | Next-basket prediction in every product block, and the goal you choose, including future lifetime value. |
| Product feeds | Filters by category, price, stock and engagement. We found no boost or bury rules. | 16 named recommendation algorithms, including next-basket prediction, with boost, bury, include and exclude rules on any product attribute. |
| On your site | ||
| Site search | We found no site search product. Search partners such as Algolia, Doofinder and Searchspring are in its marketplace. | Personalized search as you type, ranked for each visitor. |
| Chat | Customer Agent answers product questions and recommends products in web chat, email, SMS and WhatsApp. | Answers from your live catalog and documents in your store's languages, takes photos and builds the basket. |
| Personalization | Banners, content blocks and recommendations for identified visitors, through Customer Hub on Shopify and Salesforce Commerce Cloud. Anonymous visitors on product pages see generic recommendations from Shopify. | Recommendations on every page and banners, chosen for each visitor. |
| Deciding and proving | ||
| AI | Composer suggests, drafts and audits, and sends nothing without your approval. | It decides per person toward your goal, within your rules. Marketing co-pilot in beta. |
| Tests | Flow A/B tests pick the winner by open rate or click rate. Audience Optimization keeps an automatic control group. | Self-learning tests on every placement, judged against your goal. |
| Holdout | Global holdout groups for accounts with at least 400,000 profiles, one at a time. | A holdout group of any size, set up automatically on any part of the agent. |
| How orders are counted | By default, the last email opened or clicked within 5 days, including Apple's automatic opens, or a text within 12 hours of delivery. Revenue includes shipping and doesn't subtract refunds. | Orders in your store, counted once, with the clicks before them. |
| After the visit | ||
| Channels | Email, SMS in 23 listed countries, RCS, WhatsApp and mobile push. No web push, per its help center. We found no Viber channel. | Email on your domain, web and app push, SMS, Viber, WhatsApp, in-app messages and an app inbox. |
| Loyalty | Shows loyalty points through a provider such as Yotpo or Smile.io. | Points, vouchers from your own codes and a personal loyalty page. |
| Ad audiences | Syncs lists and segments to Meta, Google Ads, TikTok and Pinterest. For value-based lookalikes on Meta, its documented route is a CSV export. | Value-based audiences for Meta, Google and TikTok. Server-side purchase events for Meta and Google. |
| Setup and price | ||
| Platforms | Shopify and many other ecommerce platforms. Gomag and MerchantPro are not listed. | Shopify, Gomag, MerchantPro, the main ecommerce platforms, any web store, and iOS and Android apps. |
| Price | Published. Email is billed by active profiles, for example $150 a month at 10,000; the plan must cover every emailable profile. SMS, AI, analytics, Customer Hub and Customer Agent are priced separately. | A fixed monthly price for your store, quoted after a 30-minute call. |
Klaviyo details come from its public pages and documentation, checked on 29 September 2026: home page, AI agents, Composer, Customer Agent, predictions, product feeds, global holdouts, Audience Optimization, flow A/B tests, attribution, order revenue, on-site tracking, on-site recommendations, search partners, push, SMS countries, loyalty, Meta audiences, ecommerce integrations, billing and pricing. "We found no" means we searched its site and documentation and found no such feature. From the EU, Klaviyo shows its UK edition. Releva details come from the Releva documentation. Klaviyo is a trademark of its owner; Releva is not affiliated with it. Out of date? Tell us at info@releva.ai.
Measured against a baseline, in your own orders
Every number Releva publishes was read in a store's own orders against a baseline: a controlled A/B test, a switch-off test or a before-and-after. None credits an order just because a message was received. In one of them, a Singapore womenswear brand on Shopify ran Releva's emails against a replica of its Klaviyo logic and saw 96% more revenue per recipient in week one. The case studies show each test with its period and comparison.
Your store gets the same test. It starts with 30 minutes with your store open. Then you install the agent on Shopify, Gomag or MerchantPro, or add the script to any web store, and pick the first job: search and recommendations on your site, or one flow next to your current tool. A holdout group is set automatically, and after 30 days you compare the orders. How it decides explains the holdout.
Questions about Releva and Klaviyo
What is Klaviyo?
Klaviyo calls itself "the autonomous B2C CRM". It runs email, SMS, WhatsApp and mobile push, with predictions, product feeds, ad audiences and two AI agents, Composer and Customer Agent. It reports more than 205,000 paying customers and opened an Asia headquarters in Singapore in August 2026 (29 September 2026).
What is the main difference between Releva and Klaviyo?
Klaviyo is a CRM for your email, SMS and customer data. Releva is a sales agent: it sells to every visitor on your site with search, recommendations and a catalog chat, adds web push and Viber, and counts every order once. You can keep Klaviyo and add Releva.
Do I have to replace Klaviyo?
No. Keep Klaviyo for your email and SMS program. Start Releva on your site and with one flow, then compare the orders against a holdout group.
Won't my customers get two emails for the same abandoned cart?
Not if each flow runs in one place. When Releva takes over a flow, turn that flow off in Klaviyo.
Klaviyo has Customer Agent and on-site recommendations. Why add Releva?
Klaviyo's on-site personalization centers on identified visitors, and we found no site search product (29 September 2026). Releva sells to every visitor with search as they type, recommendations on every page and a chat that answers from your live catalog.
How will I know Releva added anything?
A holdout group of any size is set up automatically. Each attributed order is counted once, as an order in your store, with the clicks before it.
What are the main alternatives to Klaviyo?
Stores comparing email and SMS platforms usually also look at Omnisend, Brevo, Mailchimp and Attentive, and larger stores look at Bloomreach and Insider One. If you want to keep Klaviyo and add a sales agent on your site, or run everything from one agent, compare Releva.
How is pricing different?
Klaviyo publishes plans by active profile, with separate prices for SMS, AI and service add-ons. Releva is a fixed monthly price for your store, quoted after a 30-minute call.
See what your shoppers would see
Thirty minutes, with your store open. We'll show you what the agent would rank, recommend and send, and how a holdout would read it.
Book 30 minutes
You'll talk to one of us.