From our dataset of 3.5M+ Shopify stores, two email marketing apps account for the dominant share of detection: Klaviyo at the top by a significant margin, and Omnisend climbing behind it. Everything else in the market is split across tools that each do something the two leaders don’t, or do it better for a specific store profile. The 11 apps below reflect that breakdown: the dominant platforms, the CRM-first alternatives, the free-tier options for stores still building a list, and the multi-channel tools for stores that want email alongside SMS and WhatsApp from one account. Each is here because it solves a real email marketing need, not because it competes head-to-head with Klaviyo on scale.

How Many Apps Do Email Marketing Stores Run?

9.0
Shopify email marketing stores Shopify stores install 9.0 apps on average
Median: 8 apps · 25th–75th percentile: 6–12 apps · max: 89 apps
Based on Shopify email marketing stores Shopify stores in our dataset.
Apps installed% of stores
10.3%
22.5%
35.1%
47.3%
58.6%
6-1043.8%
11-2030.5%
21+1.8%

Stores that use email marketing tools run more apps than the Shopify average, and that gap is not random. Merchants who invest in email tend to be further along in their overall build: they usually have review apps collecting social proof, analytics tools tracking attribution, and often a loyalty or subscription layer on top. Email is rarely the only tool doing real work for these stores. The chart below shows exactly what else they are running alongside their email platform.

App Stack: Shopify Email Marketing Stores

Top apps detected on Shopify stores that use email marketing tools, from our dataset of 3.5M+ stores.

Klaviyo: 83.25%Klaviyo83.3%Judge.me Product Reviews App: 33.65%Judge.me Product Reviews App33.7%Loox ‑ Visual Product Reviews: 31.19%Loox ‑ Visual Product Reviews31.2%Yotpo: 22.54%Yotpo22.5%Recharge: 20.59%Recharge20.6%Countdown Timer: 17.94%Countdown Timer17.9%Triplewhale: 14.94%Triplewhale14.9%Gorgias: 14.07%Gorgias14.1%Omnisend Email Marketing & SMS: 13.45%Omnisend Email Marketing & SMS13.5%Rebuy Personalization Engine: 12.78%Rebuy Personalization Engine12.8%
RankApp% of storesCategory
1Klaviyo83.3%Email Marketing
2Judge.me Product Reviews App33.7%Reviews & Ratings
3Loox ‑ Visual Product Reviews31.2%Reviews & Ratings
4Yotpo22.5%Reviews & Ratings
5Recharge20.6%Subscriptions
6Countdown Timer17.9%Urgency & Scarcity
7Triplewhale14.9%Analytics & Tracking
8Gorgias14.1%Customer Support
9Omnisend Email Marketing & SMS13.5%Email Marketing
10Rebuy Personalization Engine12.8%Checkout Customization

The app stack chart above covers all categories, not just email. Klaviyo and Omnisend appear because they are the two most detected email platforms in our dataset. Judge.me, Loox, and Yotpo appear because stores that invest in email also tend to invest heavily in reviews. Recharge shows up because subscription merchants are among the heaviest email users. The chart tells you what email-serious stores build around their email tool, not which email tool they chose.

Our 11 picks differ from that chart for a clear reason. We limited the list to apps that do email marketing specifically, then selected within that category by detection rank in our dataset, CRM and automation depth, and free-tier reach for stores still building a list. Detection rank tells you which apps store owners are actually running at any given moment. It does not tell you which is the right fit for your store size, budget, or list. The reviews below cover both.

Klaviyo vs Omnisend: Head-to-Head Data

KlaviyoKlaviyo
Omnisend Email Marketing & SMSOmnisend Email Marketing & SMS
Share of stores in our dataset35%5.7%
Popularity rank#1#14
CategoryEmail MarketingEmail Marketing
Common store typesSubscription, Multichannel & Marketplaces, Wholesale / B2BSubscription, Multichannel & Marketplaces, Wholesale / B2B
Avg apps on their stores9.39.0
Top apps installed alongside
  • Loox ‑ Visual Product Reviews 33.7%
  • Judge.me Product Reviews App 32.8%
  • Yotpo 26.1%
  • Recharge 21%
  • Countdown Timer 18.1%
  • Judge.me Product Reviews App 38.5%
  • Klaviyo 27.5%
  • Loox ‑ Visual Product Reviews 26.3%
  • Recharge 21.8%
  • Countdown Timer 20.9%
Themes commonly running it
  • Dawn 13.3%
  • Prestige 6.2%
  • Impulse 6.1%
  • Dawn 12.7%
  • Prestige 5.6%
  • Impulse 4.6%
Key Takeaways
1
Klaviyo ranks highest in our dataset among all email marketing apps by a significant margin. No other email platform comes close to its detection share at this point in time.
2
Omnisend is the strongest detected alternative for stores that want email and SMS in one platform, and its adoption has been climbing in our dataset in recent months.
3
Drip and ActiveCampaign add a CRM layer that pure email tools do not have, which matters for stores managing customer relationships across sales, support, and marketing at once.
4
Brevo offers the most accessible free tier on this list, covering email alongside SMS and WhatsApp at no cost up to a daily send threshold.
5
Several apps on this list rank lower in our detection data but were included because they serve a specific use case that the top-detected platforms do not cover as well.

11 Shopify Email Marketing Apps: Stats + Reviews 2026