From our dataset of 3.5M+ Shopify stores, marketing automation apps split into two groups: a small number with very high detection rates, and a longer tail of tools that automate a specific channel or stage of the customer journey. Klaviyo sits alone at the top by a wide margin. Omnisend ranks second among multi-channel tools. Below those two, the 6 apps on this list each cover something the top two do not handle as a primary focus: list growth and capture automation (Privy), Shopify-native SMS as a dedicated channel (Postscript), ecommerce-native behavioral email built around Shopify events (Drip), full-stack automation with a built-in CRM (ActiveCampaign), and on-site personalization that adjusts what each visitor sees based on browse and purchase behavior (Wiser, LimeSpot). Each belongs here because it automates a specific part of the customer journey, not because it overlaps with what Klaviyo already does well.

The comparison below shows Klaviyo and Omnisend side by side on detection share, popularity rank, average app stack size on their stores, and the top apps those stores install alongside them. Klaviyo leads our detection data by a wide margin. Stores running either platform tend toward the same store types, but Klaviyo stores carry slightly heavier app stacks on average, which reflects how often Klaviyo sits at the center of a broader automation setup rather than running alone.

Klaviyo vs Omnisend: Head-to-Head Data

KlaviyoKlaviyo
Omnisend Email Marketing & SMSOmnisend Email Marketing & SMS
Share of stores in our dataset34%5.7%
Popularity rank#1#13
CategoryEmail MarketingEmail Marketing
Common store typesSubscription, Multichannel & Marketplaces, Wholesale / B2BSubscription, Multichannel & Marketplaces, Wholesale / B2B
Avg apps on their stores9.28.9
Top apps installed alongside
  • Loox ‑ Product Reviews App 34%
  • Judge.me Product Reviews App 33.6%
  • Yotpo 26.4%
  • Recharge 20.8%
  • Countdown Timer 18%
  • Judge.me Product Reviews App 39.3%
  • Klaviyo 26.9%
  • Loox ‑ Product Reviews App 26.6%
  • Recharge 21.9%
  • Countdown Timer 20.4%
Themes commonly running it
  • Dawn 13.2%
  • Prestige 6.2%
  • Impulse 6%
  • Dawn 12.6%
  • Prestige 5.4%
  • Impulse 4.4%
Key Takeaways
1
Klaviyo ranks highest in our detection dataset among all marketing automation tools by a wide margin. Its adoption across store types and sizes reflects how broadly it has become the default choice for Shopify email and SMS automation.
2
Omnisend is the strongest detected alternative for stores that want email, SMS, and push notifications running from one platform without managing separate accounts or syncing subscriber lists.
3
Privy sits between list-growth and automation: it captures subscribers and immediately triggers welcome and abandoned cart sequences, which makes it the right fit for stores still building their email list rather than stores already running complex behavioral flows.
4
Drip and ActiveCampaign serve stores that need ecommerce-native behavioral automation or CRM integration alongside email. Both appear in our detection data and are purpose-built for automated sequences triggered by Shopify events, not broadcast campaigns.
5
On-site personalization tools (Wiser, LimeSpot) run on browser events and session behavior rather than subscriber lists. They automate what each visitor sees when they arrive, which complements outbound automation rather than replacing it.

9 Shopify Marketing Automation Apps: Stats + Reviews 2026