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Educational cost model

Ecommerce email & SMS marketing cost calculator

Enter your own quote and volume assumptions. No provider is preloaded, nothing is gated, and revenue outputs depend entirely on the assumptions you enter.

Monthly cost inputs

Optional revenue assumptions

Attribution warning

This models costs and user-entered revenue assumptions. It does not prove that attributed revenue was caused by the platform.

Incrementality requires controlled measurement, such as holdout groups.

Visible formulas

  • Email variable = sends ÷ 1,000 × overage rate
  • SMS = messages × SMS rate; MMS = messages × MMS rate
  • Messaging = email variable + SMS + MMS + carrier fees
  • Monthly total = base fee + messaging + add-ons
  • Annual = monthly total × 12
  • Cost per contact = monthly total ÷ billable contacts
  • Blended cost per 1,000 sends = monthly total ÷ email sends × 1,000
  • Revenue/cost ratio = attributed revenue ÷ monthly total
  • Incremental revenue = attributed revenue × assumed incrementality
  • Incremental gross profit = incremental revenue × gross margin
  • Net contribution = incremental gross profit − monthly total
  • Break-even incremental revenue = monthly total ÷ gross margin

Published pricing references

Verified Sep 28, 2026 (Klaviyo checked Oct 7, 2026). Examples use different billing units and are not directly comparable.

  • Klaviyo — free to 250 active profiles; Email from $20/mo at 500 ($100 at 5k, $400 at 25k, $1,380 at 100k); mobile messages are a prepaid dollar plan with carrier fees included (enter $0 carrier fees for Klaviyo).
  • Omnisend — free plan; contact tiers from $16/mo per official page; US SMS $0.009–$0.007.
  • Attentive — custom usage pricing by volume, list, channels, AI.
  • Postscript — Starter $0 + $49 min. ($0.009 SMS / $0.045 MMS); Growth $100; Professional $500; plus carrier fees.

Continue with the Marketing desk, lifecycle guide, Analytics desk, and how we test.

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