Klaviyo vs Omnisend for Shopify: which email and SMS tool fits your store

A Shopify store loses far more carts than it recovers without some form of automated follow-up: a welcome series for a new subscriber, a reminder for an abandoned cart, a win-back message for a customer who has gone quiet. Klaviyo and Omnisend both build their entire pitch around solving that exact problem for Shopify specifically, with pre-built automation templates and revenue reporting that ties an email or text back to an actual order.

Where the two get genuinely hard to compare is pricing. Klaviyo's paid plans run through an interactive calculator on its own site tied to how many profiles you have, and the static page content does not show a plain starting number the way a typical pricing page does. Omnisend publishes named tiers with prices tied to a contact-count selector instead, giving you at least a visible number at each range even though that number still moves as your list grows.

Because list size is the single biggest cost driver on both platforms, the honest way to compare them is to open both pricing pages, enter your actual Shopify subscriber count into each calculator, and compare the two real numbers rather than any generic starting price quoted secondhand.

Klaviyo's own pricing page (klaviyo.com/pricing, accessed 2026-09-26) names a Free plan available at no cost as long as your account stays under 250 active profiles and 500 monthly email sends, with $5 of mobile messaging usage and $5 of Composer usage included each month on top of that. The page states that once you exceed those limits, your account cannot send additional emails or messages until the next billing cycle unless you upgrade.

Beyond Free, the page names paid Marketing and Data + Analytics plans, along with Service, Composer, and Customer Agent products shown with a 30 percent discount reference, plus Professional Services and an Enterprise tier. Every paid plan's exact monthly cost is generated through an interactive slider tied to your profile count rather than shown as a fixed number in the page's static content, so no specific starting price for Marketing could be confirmed from the page as fetched.

Features named on the page include web forms, a drag-and-drop email editor, an AI-powered subject line generator, segmentation described as basic on the free tier, revenue attribution reporting tied to campaigns, and SMS or mobile app marketing support. Shopify, WooCommerce, and Wix are named as integration options elsewhere on the site's navigation.

Omnisend's own pricing page (omnisend.com/pricing, accessed 2026-09-26) names four tiers: Free, Standard, Pro, and a Custom tier for stores with more than 150,000 contacts. Free requires no credit card and caps sending at 500 emails a month. At the lowest contact range on the page's selector, Standard is shown at $11.20 a month billed monthly and Pro at $41.30 a month billed monthly, with both prices rising as you move the selector to a larger contact count.

Email sending volume differs sharply by tier: Free is capped at 500 emails a month, Standard allows 12 times your list size in monthly sends, and Pro allows unlimited monthly sends regardless of list size. The page states billing is based on subscribers and non-subscribers who received automated messages, not only opted-in contacts.

SMS is billed separately by volume on Omnisend's page, with per-message rates stepping down as volume rises, from $0.009 a message at lower volumes to $0.007 a message at 10,000 or more sends. Pro adds what the page calls Advanced AI tools, including Forms AI and Reports AI, and unlimited segmentation is named as included on every paid tier. Pre-built ecommerce automation workflows for cart abandonment and welcome series, revenue tracking, and advanced reporting are named across the paid plans, and a free account expert is offered once monthly spend reaches $400 or more.

Klaviyo's page gives you almost nothing to compare until you plug your own profile count into its slider, since the static page content, as fetched, showed only a placeholder figure rather than a real starting price for its Marketing plan. Do not trust a specific Klaviyo dollar amount from any source that is not the live calculator on Klaviyo's own site.

Omnisend's published entry prices for Standard and Pro apply to the lowest contact range on its selector, so treat $11.20 and $41.30 a month as a floor, not a representative price for a store with a mailing list of any real size. The page's per-SMS pricing is also easy to underestimate once a store starts sending text reminders at volume.

Neither page, as fetched, detailed what happens to your automation history or segment data if you cancel or downgrade, so confirm export and data retention terms directly with either company before you migrate an active Shopify list.

Choose Klaviyo when your store already leans on deep segmentation and revenue attribution reporting for email specifically, and you are comfortable running your real numbers through its calculator rather than seeing a flat price up front.

Choose Omnisend when you want a published number at each contact range to compare against, want SMS priced by simple per-message rates rather than bundled into a profile-based calculator, or want unlimited email sends once you reach the Pro tier regardless of how large your list gets.

Either way, the free tier on both platforms is generous enough to test real automation flows, a welcome series and a cart abandonment sequence, before you commit to a paid tier. Run that test on your actual Shopify store, then compare both companies' live pricing at your real contact count before deciding.