Klaviyo vs Substack: Complete Comparison (2026)
Updated: March 7, 20268 min read
VS
Quick Comparison
Klaviyo
Substack
Starting Price
$20/mo
10% of revenue
Free Plan
Yes
Yes
Users
130K+ orgs
35M+ readers
Founded
2012
2017
Rating
4.6/5
4.5/5
Best For
E-commerce brands on Shopify wanting data-driven e...
Writers wanting to launch and monetize a paid news...
Feature-by-Feature Comparison
KlaviyoSubstack
94Ease of Use92
96Features94
96Value for Money94
87Customer Support85
89Integrations87
90Mobile App88
AI Verdict
Klaviyo leads with a ToolScout Score of 92 vs 90 for Substack. Klaviyo is best suited for E-commerce brands on Shopify wanting data-driven email marketing, while Substack excels for Writers wanting to launch and monetize a paid newsletter business. Both are strong options in the Email Marketing space.
CHOOSE KLAVIYO IF:
E-commerce brands on Shopify wanting data-driven email marketing.
CHOOSE SUBSTACK IF:
Writers wanting to launch and monetize a paid newsletter business.
Frequently Asked Questions
Is Klaviyo better than Substack?
Klaviyo scores 92/100 on ToolScout compared to Substack's 90/100. However, the best choice depends on your specific needs. Klaviyo is best for E-commerce brands on Shopify wanting data-driven email marketing. Substack is best for Writers wanting to launch and monetize a paid newsletter business.
Does Klaviyo have a free plan?
Yes, Klaviyo offers a free plan. Paid plans start from $20/mo.
Does Substack have a free plan?
Yes, Substack offers a free plan. Paid plans start from 10% of revenue.
Can I migrate from Klaviyo to Substack?
Migration between Klaviyo and Substack depends on the specific features you use. Both tools are in the Email Marketing category. Check each tool's import/export options for data portability before switching.