Is Substack cheaper than Klaviyo Email?

Yes. On their starting paid plans, Substack is about 100% cheaper than Klaviyo Email — roughly $540 per seat per year.

Does Klaviyo Email have a free plan?

Yes — Klaviyo Email's pricing page lists a free tier (Free up to 250 contacts; ~$45/mo at 5k contacts). Limits apply; see source for current caps.

Does Substack have a free plan?

Yes — Substack's pricing page lists a free tier (Free to send · 10% of paid subscriptions). Limits apply; see source for current caps.

Which should I pick, Klaviyo Email or Substack?

Pick Klaviyo Email if you're shopify/bigcommerce stores running revenue-attributed flows. Pick Substack if you're independent writers selling paid newsletters.

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// comparison

Klaviyo Email vs. Substack

pricing checked June 2026

Compare

📧

Klaviyo Email

$45/mo

Ecommerce-focused email/SMS with deep Shopify and segmentation hooks.

Best for: Shopify/BigCommerce stores running revenue-attributed flows
Model: per-contact

Cheaper start

🟧

Substack

$0/mo

Newsletter platform with paid subs

Best for: Independent writers selling paid newsletters
Model: free

Pricing math

Substack is 100% cheaper than Klaviyo Email on starting plans — roughly $45/mo · $540/yr per seat.

Formula: monthly = pricier − cheaper · percent = round((monthly / pricier) × 100) · annual = monthly × 12

Verdict

Pick Substack if you're independent writers selling paid newsletters. Pick Klaviyo Email if you're shopify/bigcommerce stores running revenue-attributed flows.

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Caveats

Klaviyo Email: Pricing scales aggressively with list size
Substack: Takes 10% of paid sub revenue

Sources

Klaviyo Email pricing ↗Substack pricing ↗

More comparisons

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🐝Klaviyo Email vs Beehiiv Launch→🐝Substack vs Beehiiv Launch→✉️Klaviyo Email vs Buttondown→✉️Substack vs Buttondown→💌Klaviyo Email vs Brevo Business→💌Substack vs Brevo Business→✉️Klaviyo Email vs Kit Creator→✉️Substack vs Kit Creator→💌Klaviyo Email vs Loops→💌Substack vs Loops→

Prices change often — verify on the vendor's site before switching.