Customer.io alternatives: 5 apps ranked by verified data

Facts checked Oct 25, 2026AppBreakup editorialHow we rank

Common reasons people leave Customer.io: needs developer work to send events, and expensive step up to Premium. We ranked 5 alternatives by how directly each one replaces Customer.io, then by reviews, real visits and how recently each app's facts were checked against its own website. Loops currently ranks first.

Quick comparison

#	App	Pricing	Open source	Platforms	Verified facts	Score
1	Klaviyo	Free plan + paid	No	Web, iOS, Android	3 of 3	59.6

1. KlaviyoTop pick
Best for: Ecommerce brands that want automation driven by purchase and browsing data
Free plan + paidWeb, iOS, Android
59.6
score / 100
Why switch from Customer.io
Better suited if your events come from an ecommerce store.
Pros
Deep ecommerce data, segmentation and predictive metrics
Strong pre-built flows for carts, browsing and win-back
Revenue reporting per campaign and flow
Cons
Expensive for large lists
Overkill for non-ecommerce businesses
Steep learning curve
Visit Klaviyo Details and reviews
How this score is calculated
Editorial fit ×0.377
Reviews ×0.363
Clicks (90 days) ×0.150
Freshness ×0.1585
Votes ×0.150
0 counted reviews, 0 up and 0 down votes. Full formula
Is Klaviyo a good Customer.io alternative?
Verified facts
3 of 3 verified
Free plan
250 profiles, 500 emails/month
Checked Oct 25, 2026klaviyo.com(opens source in a new tab)
Free plan channels
Email, SMS, Customer Hub, reporting
Checked Oct 25, 2026klaviyo.com(opens source in a new tab)
Free plan mobile messaging
$5 of SMS/mobile messages per month
Checked Oct 25, 2026klaviyo.com(opens source in a new tab)

The best Customer.io alternative for…

The highest-ranked app in this list for each need.

Best Customer.io alternative for most people

Loops

Simpler, cheaper email for SaaS teams that don't need push or SMS.

Best Customer.io alternative for a free plan you can upgrade

Klaviyo

Better suited if your events come from an ecommerce store.

Best Customer.io alternative for iPhone and Android

Salesforce Marketing Cloud

Enterprise cross-channel journeys for very large audiences.

Best Customer.io alternative for working in the browser

Bento

Event-based email with flat pricing and good deliverability.

Customer.io alternatives: common questions

What is the best alternative to Customer.io?

Loops ranks first right now. Simpler, cheaper email for SaaS teams that don't need push or SMS. Bento and Klaviyo follow it in our ranking.

Is there a free alternative to Customer.io?

Yes. Loops (free plan + paid) and Klaviyo (free plan + paid) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to Customer.io?

None of the 5 alternatives in this list is open source.

Why do people switch from Customer.io?

The complaints we hear most: needs developer work to send events; expensive step up to Premium; overkill for simple newsletters.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces Customer.io, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.