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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

#AppPricingOpen sourcePlatformsVerified factsScore
1Klaviyo logoKlaviyoFree plan + paidNoWeb, iOS, Android3 of 359.6
2SaSalesforce Marketing CloudPaidNoWeb, iOS, Android3 of 357.2
3ActiveCampaign logoActiveCampaignPaidNoWeb, iOS, Android3 of 355.3
  1. Klaviyo logo

    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)
  2. Sa

    2. Salesforce Marketing Cloud

    Best for: Large companies on Salesforce sending complex, high-volume campaigns

    PaidWeb, iOS, Android

    57.2

    score / 100

    Why switch from Customer.io

    Enterprise cross-channel journeys for very large audiences.

    Pros

    • Scales to very large audiences and complex data
    • Cross-channel journeys tied to Salesforce CRM
    • Agentforce AI and attribution in newer editions

    Cons

    • Very expensive, with annual contracts
    • Needs specialists to implement and run
    • Confusing range of products and editions
    Visit Salesforce Marketing Cloud Details and reviews
    How this score is calculated
    Editorial fit ×0.369
    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 Salesforce Marketing Cloud a good Customer.io alternative?

    Verified facts

    3 of 3 verified
    Growth Edition price
    $1,500 per org/month, billed annually
    Checked Oct 25, 2026salesforce.com(opens source in a new tab)
    Advanced Edition price
    $3,250 per org/month, billed annually
    Checked Oct 25, 2026salesforce.com(opens source in a new tab)
    Email product
    Marketing Cloud Engagement
    Checked Oct 25, 2026salesforce.com(opens source in a new tab)
  3. ActiveCampaign logo

    3. ActiveCampaign

    Best for: Small and mid-sized businesses that rely on complex automated nurture sequences

    PaidWeb, iOS, Android

    55.3

    score / 100

    Why switch from Customer.io

    Strong automation with a CRM, less developer setup required.

    Pros

    • One of the most flexible automation builders available
    • Built-in CRM, lead scoring and pipelines
    • Large library of integrations and automation recipes

    Cons

    • No free plan
    • Pricier than simpler newsletter tools
    • Many options make it complex for small teams
    Visit ActiveCampaign Details and reviews
    How this score is calculated
    Editorial fit ×0.363
    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 ActiveCampaign a good Customer.io alternative?

    Verified facts

    3 of 3 verified
    Plus plan allowance
    10,000 sends/month at 1,000 contacts
    Checked Oct 25, 2026activecampaign.com(opens source in a new tab)
    Pro plan allowance
    12,000 sends/month, 3 seats
    Checked Oct 25, 2026activecampaign.com(opens source in a new tab)
    Money-back guarantee
    30 days
    Checked Oct 25, 2026activecampaign.com(opens source in a new tab)

The best Customer.io alternative for…

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

Loops logo

Best Customer.io alternative for most people

Loops

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

Klaviyo logo

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

Klaviyo

Better suited if your events come from an ecommerce store.

Sa

Best Customer.io alternative for iPhone and Android

Salesforce Marketing Cloud

Enterprise cross-channel journeys for very large audiences.

Be

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.