Best Transactional SMS Apps apps - 2026

13 Transactional SMS Apps apps tracked, ranked by a weekly index of review velocity, satisfaction, and momentum. Every position derives from publicly available Shopify App Store signals, refreshed every Monday.

Apps in this collection
13
Average rating (Aug 2026)
4.1
Built for Shopify
3
23% of apps
Top category
SMS marketing
6 apps

Key Facts about Transactional SMS Apps Apps

What the data says about Shopify merchants here.

92% offer a free plan (12 of 13); 0 are fully free.
Paid plans run from about $5 to $59 per month.
4,637 reviews have been left across these apps.
5 of 13 apps rate 4.8 or higher.
The most-reviewed app in Transactional SMS Apps is Klaviyo: Email Marketing & SMS, with 2,935 reviews.
Apps in this collection were first published between 2012 and 2024.

Standout Transactional SMS Apps Apps

Four apps, each measured on a different dimension.

Showing 1-13 of 13
Klaviyo: Email Marketing & SMS icon

Klaviyo: Email Marketing & SMS

TrendingLeader
4.72,935 reviews

Email marketing, SMS, & WhatsApp that turn messages into sales

Pros
Cons
$0-$20/mo
COD King‑Part COD & OTP Verify icon

COD King‑Part COD & OTP Verify

Built for ShopifyLeader
5921 reviews

Cash on delivery verification & Partial COD & partial payments

Pros
Cons
$0-$59/mo

Boost revenue by recover abandoned carts via WhatsApp, webpush

Pros
Cons
$0-$50/mo
Sendvio: Email & SMS Marketing icon

Sendvio: Email & SMS Marketing

Built for Shopify
4.8148 reviews

Full-featured all-in-one app: Email & SMS marketing, Reviews

Pros
Cons
$0-$39/mo
YSMS ‑ SMS Marketing icon

YSMS ‑ SMS Marketing

Built for Shopify
4.652 reviews

Recover abandoned carts & boost sales with SMS automation

Pros
Free
Cashfree CODFIRM icon

Cashfree CODFIRM

4.444 reviews

Reduce COD RTOs and improve conversion with One Click Checkout

Pros
$0-$50/mo

For India | Verify COD Orders by IVR Call, SMS or OTP

Pros
Cons
Free

Bump your Abandoned Cart Recovery with SMS Marketing & Upsell

Pros
Cons
$0-$19/mo
SMS Alert icon

SMS Alert

2.83 reviews1 rank

Boost sales & security, cart recovery & alerts

Free

Merchants browsing Transactional SMS Apps also explore these collections

FAQs about Transactional SMS Apps Apps

Answers verified against August 2026 Transactional SMS Apps data.

Q1What are the best Transactional SMS Apps apps in 2026?

Klaviyo: Email Marketing & SMS leads by review volume; COD King‑Part COD & OTP Verify is the highest-rated; Klaviyo: Email Marketing & SMS has the steepest momentum (+95/30d).

Q2Which of these apps are free?

12 of 13 offer a free plan, 0 fully free. Paid tiers run about $5 to $59/mo.

Q3How is review velocity (the "biggest mover") calculated?

Net new reviews over the last 30 days, synced weekly. Klaviyo: Email Marketing & SMS leads at +95.

Q4How much do Transactional SMS Apps apps cost?

Freemium-heavy: 12/13 have a $0 tier. Paid $5 to $59/mo.