Email Delivery Shopify Apps – Reviews & Rating Trends
(Updated October 2026) Compare reviews and ratings for email delivery Shopify apps and see which apps are gaining the most install momentum. Review counts are the closest proxy to actual installs — Shopify doesn't publish install numbers — so review velocity is one of the strongest signals of merchant adoption for email delivery apps.
Email Delivery Shopify Apps — Full Reviews Table
All tracked email delivery Shopify apps ranked by total review count, with new reviews gained vs 30 days ago and average rating. Filter by country and date range; sort by reviews or review velocity.
| App | Reviews | Rating |
|---|---|---|
7,72129 | 5.0 | |
3,36298 | 4.6 | |
 Appointment Booking Cowlendar | 2,24648 | 5.0 |
 Zapiet ‑ Pickup + Delivery | 1,88435 | 4.8 |
 Appointment Booking App Apntly | 1,64652 | 5.0 |
 Shopify Digital Products | 1,344107 | 4.5 |
 Digital Downloads PDF Pendora | 1,21425 | 5.0 |
 Essent Estimated Delivery Date | 1,02455 | 5.0 |
 Appointment Booking App ointo | 92817 | 4.9 |
 Digital Downloads & PDF ‑ BIG | 8657 | 5.0 |
Showing 1-10 out of 69
Key Insights:
- CW Email Popup Email Marketing leads email delivery apps with 7,721 total reviews — 4,359 more than Klaviyo: Email Marketing & SMS (3,362).
- Top 3 apps (CW Email Popup Email Marketing, Klaviyo: Email Marketing & SMS, Appointment Booking Cowlendar) hold 59.9% of all reviews across the top 10 tracked email delivery apps.
- Shopify Digital Products is gaining reviews fastest this month (+107) — strong recent install momentum.
- 10 of 10 top-reviewed email delivery apps gained new reviews this period; 0 saw no net additions.
Email Delivery Shopify Apps — Cumulative Review Trend
Monthly cumulative review count for the top 5 email delivery Shopify apps over the past year — a longitudinal view of which apps keep accumulating reviews and which have flattened.
Charts Data
| App | May 2026 | Jun 2026 | Jul 2026 | Aug 2026 | Sep 2026 | Oct 2026 |
|---|---|---|---|---|---|---|
 CW Email Popup Email Marketing | 7,46389 | 7,53269 | 7,61785 | 7,68770 | 7,71427 | 7,7217 |
 Klaviyo: Email Marketing & SMS | 2,856242 | 3,023167 | 3,134111 | 3,238104 | 3,33294 | 3,36230 |
| Appointment Booking Cowlendar | 2,01543 | 2,07257 | 2,12250 | 2,18765 | 2,24053 | 2,2466 |
| Zapiet ‑ Pickup + Delivery | 1,68742 | 1,75770 | 1,78730 | 1,83649 | 1,88145 | 1,8843 |
| Appointment Booking App Apntly | 1,44043 | 1,49353 | 1,54148 | 1,58342 | 1,62946 | 1,64617 |
Key Insights:
- CW Email Popup Email Marketing's cumulative reviews grew from 5,506 to 7,721 over the charted period — 2,215 new reviews accumulated.
- CW Email Popup Email Marketing's 7,721 cumulative reviews sit 4.7× above Appointment Booking App Apntly's 1,646 at the bottom of the plotted email delivery set — a wide spread between long-running leaders and newer entrants.
- CW Email Popup Email Marketing's cumulative review lead compounds over time — an established review base acts as a trust signal for merchants comparing apps, and continued adoption keeps the review count climbing, a flywheel newcomers struggle to interrupt.
Fastest to 1,000 Reviews — Email Delivery Shopify Apps
Race-style view of how the top 5 email delivery Shopify apps reached 1,000 reviews — months since launch on the X-axis, cumulative review count on the Y-axis. Adjust the milestone or app set with the filters above.
Charts Data
| App | Months to Reach 1,000 Reviews | Current Review Count |
|---|---|---|
| CW Email Popup Email Marketing | 12 | 7,725 |
| Appointment Booking Cowlendar | 34 | 2,247 |
| Appointment Booking App Apntly | 47 | 1,628 |
| Klaviyo: Email Marketing & SMS | 113 | 3,335 |
| Zapiet ‑ Pickup + Delivery | 118 | 1,882 |
Key Insights:
- CW Email Popup Email Marketing reached 1,000 reviews fastest — in 12 months since launch.
- Appointment Booking Cowlendar crossed 1,000 reviews in 34 months — 22 months behind CW Email Popup Email Marketing.
- All 5 apps in this set have crossed 1,000 reviews — months-to-1k ranges from 12 to 118, a 106-month spread.
⚠️ Data issue or feedback?
Reach out to us at [email protected].
Most-Reviewed Email Delivery Shopify Apps
CW Email Popup Email Marketing leads email delivery Shopify apps with 7,721 cumulative reviews and a 5.0★ average rating. Klaviyo: Email Marketing & SMS (3,362 reviews) and Appointment Booking Cowlendar (2,246 reviews) round out the top 3. Combined, the top 3 apps hold 59.9% of all reviews across the top tier — a tight oligopoly where the leader's review flywheel is hard to break. Notable mover: Shopify Digital Products added the most new reviews this month (+107) — a strong recent install signal.
CW Email Popup Email Marketing's 7,721-review base reflects long-running merchant adoption in email delivery — a tenure signal for merchants who weight track record alongside current fit. Klaviyo: Email Marketing & SMS (3,362 reviews) and the rest of the top tier carry meaningful adoption too, and feature scope, support, and current trajectory often matter more than raw review totals when choosing between established options.
Email Delivery Shopify Apps — Long-Term Review Trends
CW Email Popup Email Marketing accumulated 2,215 new reviews from Jan 2025 to Oct 2026, growing from 5,506 to 7,721 cumulative reviews — a steep addition rate for email delivery apps. Across the top 5 plotted email delivery apps, the steepest ongoing slopes mark the ones still actively winning new merchants — absolute review counts matter less than recent acceleration when picking apps in a category that's still growing.
CW Email Popup Email Marketing's lead in cumulative reviews compounds in concentrated email delivery categories: more reviews lift App Store rank, which drives more installs, which add more reviews — newcomers face a steep curve to catch up to the 7,721 cumulative base.
Review Growth Velocity in Email Delivery — Which Apps Grew Fastest
CW Email Popup Email Marketing reached 1,000 reviews in 12 months since launch — the fastest ramp among the top 5 email delivery apps tracked here. Appointment Booking Cowlendar in 34 months, Appointment Booking App Apntly in 47 months, Klaviyo: Email Marketing & SMS in 113 months, and Zapiet ‑ Pickup + Delivery took 118 months to cross the same milestone, a 106-month spread between the fastest and slowest in the set.
All 5 apps in this set have crossed 1,000 reviews, with current cumulative counts now ranging from 1,628 (Appointment Booking App Apntly) to 7,725 (CW Email Popup Email Marketing) — a 4.7× difference, showing how far ahead the leader has continued to build past the milestone.
The 106-month gap between CW Email Popup Email Marketing's and Zapiet ‑ Pickup + Delivery's time-to-1,000 highlights how unevenly product-market fit landed across this email delivery set — the leader found its merchant audience early, while late-rampers took multiple years to reach the same review depth. For merchants comparing these apps today, slower-ramping apps may have closed the functionality gap but still operate on smaller review bases.
Top 5 Apps in Email Delivery
- Appointment Booking App Apntly — Has accumulated 1,646 reviews for email delivery at a 5.0★ average.
- Appointment Booking Cowlendar — Has accumulated 2,246 reviews for email delivery at a 4.9★ average.
- Avada PDF Invoice Generator — Has accumulated 709 reviews for email delivery at a 4.9★ average.
- Digital Downloads PDF Pendora — Has accumulated 1,214 reviews for email delivery at a 5.0★ average.
- Appointment Booking App ointo — Has accumulated 928 reviews for email delivery at a 4.9★ average.
Email Delivery Shopify Apps — Frequently Asked Questions
1. Which email delivery app has the most reviews on Shopify?
CW Email Popup Email Marketing has the most reviews among email delivery Shopify apps with 7,721 total reviews, ahead of Klaviyo: Email Marketing & SMS at 3,362. Sort the table by Reviews (High to Low) to see the full ranked list.
2. How are reviews used to measure email delivery app popularity on Shopify?
Reviews are the closest publicly available proxy for install volume on Shopify — Shopify doesn't publish install counts, so cumulative reviews and review velocity are the standard way to measure adoption. For email delivery apps, this page shows total reviews, new reviews per month, and time-to-1,000 reviews so you can compare both established scale and current momentum.
3. Which email delivery app is gaining reviews fastest on Shopify?
Shopify Digital Products is gaining the most new reviews this month among email delivery apps, adding 107 reviews in the past 30 days. Switch the table sub-tab to "Review Changes" to see all apps ordered by review velocity.
4. Which email delivery app reached 1,000 reviews fastest on Shopify?
CW Email Popup Email Marketing hit 1,000 reviews in 12 months since launch — the fastest review ramp among tracked email delivery Shopify apps. Use the "Fastest to 1,000 Reviews" chart above to compare against other apps or change the milestone (5,000, 10,000, etc.).
5. What is the average rating for top email delivery Shopify apps?
The top 5 email delivery apps average 4.9★ across 16,817 combined reviews — a strong overall quality benchmark. Individual ratings appear in the table above; sort by Reviews to see how rating varies across the most-installed apps.
6. How often are review counts for email delivery apps updated on Shopify?
Review counts and rating data refresh weekly on this page. The Reviews Trend chart aggregates monthly intervals by default — switch to weekly granularity for shorter-term signals or yearly for macro trends.
