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Shopify Email Marketing Cost Calculator

Compare estimated monthly cost across Klaviyo, Omnisend, Brevo, and Mailchimp for your Shopify store. Enter your list size and send volume to see which is cheapest and roughly how much you could save.

Most tools bill on contacts; Brevo bills on emails sent, so both matter. Emails default to contacts x4 until you change them.

At about 5,000 contacts and 20,000 emails/mo, Brevo looks cheapest, around ~$85/mo less than Mailchimp.

Estimates only · pricing as of June 2026 · confirm live rates with each vendor before deciding.

How each tool bills

Pricing models differ, which is why the same store gets very different quotes. Klaviyo bills on active profiles, including, since February 2025, checkout-abandon contacts who never opted in. Omnisend and Mailchimp bill on contact count. Brevo is the outlier, billing on emails sent per month rather than contacts stored, which is why a large but low-frequency list can pay far less there.

How we estimate

We interpolate each tool's published pricing tiers for your inputs and round to a readable figure. The numbers track the hedged pricing in our reviews and comparisons as of June 2026. They are estimates for planning, not quotes, and exclude SMS and other add-ons. Always confirm live rates on each vendor's pricing page before committing.

Next steps

Once you have a cost range, weigh it against features. See our best email marketing software for Shopify guide, the Klaviyo pricing breakdown, and head-to-heads like Omnisend vs Mailchimp and Brevo vs Mailchimp. Browse everything in the email marketing category.

FAQ

How accurate is this email cost calculator?
It gives approximate estimates based on each tool's published pricing tiers as of June 2026, interpolated for your list size and send volume. Real bills vary with plan options, add-ons, and billing changes, so treat the numbers as a guide and confirm live rates with each vendor before deciding.
Why does the calculator ask for both contacts and emails sent?
Most tools (Klaviyo, Omnisend, Mailchimp) bill on the number of contacts or active profiles, but Brevo bills on emails sent per month. To compare them fairly the calculator needs both numbers, so emails default to contacts times four until you set your own figure.
Which Shopify email tool is cheapest?
It depends on your list size and how often you send. Brevo is often cheapest for large lists that send infrequently because it bills on send volume, while Omnisend tends to undercut Klaviyo at small to mid contact counts. Enter your numbers above to see the estimate for your case.
Does cheapest mean best?
No. Price is one factor. Klaviyo costs more but offers the deepest segmentation and attribution, while cheaper tools may fit simpler needs. Use this calculator to understand cost, then read our comparisons to weigh features against price.