Back-In-Stock Emails Shopify Apps – Market Share Breakdown
(Updated September 2026) See which back-in-stock emails Shopify apps dominate installs and how their share has shifted over time. This keyword page shows the full market share table, monthly share trends for the leaders, and a country-level breakdown so you can compare global vs regional dominance.
Back-In-Stock Emails Shopify Apps — Full Market Share Table
All tracked back-in-stock emails Shopify apps ranked by current install share, with change vs 30 days ago and Leader / Climbing / Declining / Stable status — filterable by country and date range.
| # | App | Market Share | Change | Status |
|---|---|---|---|---|
| 1 |  Back In Stock,Notify Me: Kbite | 50.59% | 5.87 | Climbing |
| 2 |  Preorder, Back In Stock ‑ STOQ | 22.84% | 10.15 | Declining |
| 3 |  Preorder Now Presale Timesact | 10.25% | 6.96 | Climbing |
| 4 |  Klaviyo: Email Marketing & SMS | 8.98% | 3.67 | Declining |
| 5 |  Essent Preorder Back in Stock | 3.65% | 0.23 | Climbing |
| 6 |  Omnisend Email Marketing & SMS | 1.39% | 0.13 | Climbing |
| 7 |  Brevo PushOwl: Email,Push,SMS | 1.00% | 0.01 | Climbing |
| 8 |  Pop Convert ‑ Pop Ups, Banners | 0.84% | 0.62 | Climbing |
| 9 |  Mailchimp Email SMS Marketing | 0.21% | 0.02 | Declining |
| 10 |  Wiz ‑ AI Email Marketing | 0.14% | 0.06 | Climbing |
Showing 1-10 out of 23
Key Insights:
- Back In Stock,Notify Me: Kbite holds 50.6% share of back-in-stock emails app installs — 27.7pp ahead of Preorder, Back In Stock ‑ STOQ (22.8%).
- Top 3 apps (Back In Stock,Notify Me: Kbite, Preorder, Back In Stock ‑ STOQ, Preorder Now Presale Timesact) account for 83.7% of all back-in-stock emails install share — a concentrated market.
- Preorder Now Presale Timesact is gaining share fastest this month (+6.96pp) — the largest single gainer among the top back-in-stock emails apps by share.
- Preorder, Back In Stock ‑ STOQ is losing share fastest (-10.15pp) — could indicate a churning user base or a stronger challenger gaining ground.
Back-In-Stock Emails Shopify Apps — Market Share Over Time
Monthly market share trajectory for the top 5 back-in-stock emails Shopify apps over the past year — see who's gaining or losing install share month by month.
Charts Data
| App | Apr 2026 | May 2026 | Jun 2026 | Jul 2026 | Aug 2026 | Sep 2026 |
|---|---|---|---|---|---|---|
| Preorder, Back In Stock ‑ STOQ | — | 57.2% | 33.0%24.19 | 22.7%10.25 | 22.2%0.54 | 54.1%31.95 |
| Back In Stock,Notify Me: Kbite | — | 24.1% | 44.8%20.67 | 50.6%5.88 | 51.0%0.4 | 25.5%25.52 |
| Klaviyo: Email Marketing & SMS | — | 4.0% | 12.6%8.69 | 9.0%3.66 | 10.1%1.07 | 9.3%0.73 |
| Preorder Now Presale Timesact | — | 3.2% | 3.3%0.12 | 10.3%7.03 | 9.9%0.45 | 5.5%4.45 |
| Essent Preorder Back in Stock | — | 8.7% | 3.4%5.32 | 3.6%0.22 | 3.6%0.03 | 2.9%0.64 |
Key Insights:
- Preorder, Back In Stock ‑ STOQ's share contracted from 57.2% → 54.1% over the charted period.
- Of the top 5 tracked back-in-stock emails apps, 3 grew share and 2 lost share — challengers are eating into leader's share.
Top Back-In-Stock Emails Shopify Apps by Country
Per-country market share rankings for back-in-stock emails Shopify apps across 5 markets — see which apps lead in each country and where regional leaders diverge from the global leader.
| # | 🌎 Worldwide |  United States |  India |  China |  United Kingdom |
|---|---|---|---|---|---|
| 1 | | | | | |
| 2 | | | | | |
| 3 | | | | | |
| 4 | | ||||
| 5 | | | | |
Key Insights:
- Back In Stock,Notify Me: Kbite leads back-in-stock emails apps in all 4 tracked markets — United States, India, China, United Kingdom.
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Top 5 Apps in Back-In-Stock Emails
- Preorder, Back In Stock ‑ STOQ — Leads back-in-stock emails apps with 54.1% install share, rated 5.0★ — gaining share this month.
- Back In Stock,Notify Me: Kbite — Holds 25.5% of back-in-stock emails app install share, rated 5.0★ — losing share this month.
- Preorder Now Presale Timesact — Holds 5.5% of back-in-stock emails app install share, rated 5.0★ — losing share this month.
- Klaviyo: Email Marketing & SMS — Holds 9.3% of back-in-stock emails app install share, rated 4.7★ — losing share this month.
- Essent Preorder Back in Stock — Holds 2.9% of back-in-stock emails app install share, rated 5.0★ — gaining share this month.
Back-In-Stock Emails Shopify Apps — Frequently Asked Questions
1. Which back-in-stock emails app has the highest market share on Shopify?
Back In Stock,Notify Me: Kbite dominates the back-in-stock emails category on Shopify with 50.6% of installs — 27.7pp ahead of Preorder, Back In Stock ‑ STOQ. This is a clear leader by share, so most merchants default to it unless they have a niche-fit reason to pick differently.
2. How is market share calculated for back-in-stock emails Shopify apps?
For back-in-stock emails (a keyword page), market share is rank-weighted — apps at position #1 carry roughly 40× the weight of apps at position #22, and apps beyond #22 are excluded. Each app's weighted score is divided by the total weighted score across the keyword to give the share %. This reflects Shopify search behaviour: most installs come from the top of the results.
3. Which back-in-stock emails apps are gaining market share on Shopify?
Preorder Now Presale Timesact is gaining back-in-stock emails app market share fastest this month, up +6.96pp versus 30 days ago. Switch the table sub-tab to "Market Share Changes" to see all gainers ordered by movement.
4. Which back-in-stock emails apps are losing market share on Shopify?
Preorder, Back In Stock ‑ STOQ has lost the most market share this month among back-in-stock emails apps (-10.15pp). Sort the table by Change (Low to High) to see the full list of decliners.
5. Which countries drive the most back-in-stock emails Shopify app installs?
United States drives the largest share of back-in-stock emails app installs at 37.9%, followed by United Kingdom at 9.9% and Australia at 9.4%. Use the country picker on the third card to compare market leaders by country.
6. How many back-in-stock emails apps does ShopDigest track on Shopify?
ShopDigest tracks 96 back-in-stock emails apps on the Shopify App Store. Market share, rankings, and review data refresh weekly so you can track competitive shifts as they happen.
