"Klaviyo alternatives" lists usually put five unrelated platforms side by side as if they compete for the same buyer. They mostly don't. Here's the landscape organized by what each platform is actually built to do, including when Klaviyo itself isn't the right fit.
The landscape
Platform
Built for
Choose it over Klaviyo when
Omnisend
Ecommerce-first email + SMS, similar shape to Klaviyo
You want a lighter-weight, often lower-cost equivalent for a smaller store with simpler segmentation needs
Attentive
SMS-first marketing, with email as the secondary channel
SMS is your primary revenue channel, not a complement to email
HubSpot
Unified CRM, sales pipeline, and marketing across the full customer lifecycle
Email/SMS marketing is one piece of a broader sales-and-CRM need, not a standalone ecommerce function
Braze
Enterprise customer engagement across app, web, and messaging channels
You're a product-led/app-first company with dedicated engineering resources and cross-channel orchestration needs beyond email/SMS
Iterable
Enterprise cross-channel marketing automation
Similar profile to Braze - large-scale, engineering-supported cross-channel orchestration
When Klaviyo isn't the right fit
Your business isn't ecommerce and doesn't have product/order events to build automation around - a general CRM-marketing tool like HubSpot may fit better.
You need deep cross-channel orchestration (push, in-app, web) beyond email/SMS at enterprise scale - Braze or Iterable's broader channel model fits that job better.
SMS is your primary channel and email is secondary - Attentive is built SMS-first.
Related coverage
For platform-selection questions that sit above any single vendor - which category of tool fits which attribution or measurement need - see martech.webclat.com's attribution tools guide. For a data-architecture-level comparison against the closest direct competitor, see Klaviyo vs Mailchimp.
Common questions
What's the closest Klaviyo alternative for a Shopify store?
Omnisend is the most direct like-for-like competitor for ecommerce-first email+SMS marketing automation. Attentive is closer if SMS is your primary channel rather than a secondary one to email.
When does HubSpot make more sense than Klaviyo?
When email/SMS marketing is one piece of a broader CRM and sales-pipeline need - HubSpot's strength is unifying marketing, sales, and service data, not ecommerce-specific event depth.
Are Braze and Iterable Klaviyo alternatives?
They compete at a different scale and buyer profile - both are typically enterprise-tier customer engagement platforms built for product/app-led companies with dedicated engineering resources, not the SMB/mid-market ecommerce buyer Klaviyo primarily serves.
Do you help migrate off Klaviyo to an alternative?
We can, though most of our work is inbound (migrating to Klaviyo or fixing an existing account) rather than outbound. The core skill - mapping one platform's event model to another's - is the same either direction.
Get a platform fit assessment for your actual event model.
We map your requirements to each platform's data architecture, not their marketing pages.