Start with Klaviyo (e-commerce revenue attribution at scale)
At 5,000–50,000 contacts, Klaviyo's predictive analytics and per-email revenue reporting justify the premium over Omnisend. Native Shopify sync and SMS integration drive measurable ROI.
- Recommendation: Klaviyo, Omnisend
Recommended starting points
Based on your constraints, these products typically fit best. Read each decision brief to confirm pricing behavior and limits match your reality.
Klaviyo
E-commerce-focused email and SMS platform with native Shopify/BigCommerce integration, per-email revenue attribution, and predictive analytics. Free for 250 contacts; pricing scales with list and SMS
Omnisend
E-commerce marketing automation with pre-built Shopify/WooCommerce workflows, email + SMS + push notifications in one plan. Free for 250 contacts; Standard at $16/mo for 500 contacts.
Why this recommendation
At 5,000–50,000 contacts, Klaviyo's predictive analytics and per-email revenue reporting justify the premium over Omnisend. Native Shopify sync and SMS integration drive measurable ROI.