Email/SMS Marketing

Klaviyo

Data-driven email and SMS for e-commerce brands

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Overview

Klaviyo is built around store and profile data: flows that react to browse, cart, purchase, and predicted value—not just blast campaigns.

We match it against Mailchimp, Omnisend, ActiveCampaign, Kit, and Customer.io depending on whether the buyer is retail, creator, or product-led.

Best for

✓Shopify/WooCommerce and similar DTC brands
✓Teams that need email + SMS on shared profiles
✓Marketers optimizing revenue per recipient, not just open rates

Less ideal for

✕B2B services that need CRM-first automation
✕Creators who only need newsletter + digital products (Kit)
✕Budgets that cannot absorb contact-based pricing at scale

Key capabilities

Segmentation
Predictive Analytics
SMS Marketing
E-commerce Integrations

Pricing snapshot

Active profiles, not just last month’s recipients. Free: 250 profiles / 500 emails. Email plan ~$20 at 500, ~$30 at 1,000, ~$150 at 10,000, ~$720 at 50,000 (Aug 2026). Email + SMS from ~$35 at the first paid band. Suppress cold profiles or you pay for ghosts. Confirm on klaviyo.com/pricing.

StackClash verdict

Default shortlist for serious e-commerce messaging. Non-retail teams should pressure-test against ActiveCampaign or HubSpot.

Klaviyo comparisons

Every head-to-head on StackClash that includes Klaviyo.