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Marketing · head to head

Customer.io vs Iterable

Customer.io logo

Customer.io

Marketing

Data-driven messaging for teams getting started, scaling and beyond

From
$15/month
Rated
-
Full reviewWebsite
Iterable logo

Iterable

Marketing

The AI customer engagement platform global brands trust to create experiences that drive growth…

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Customer.io essentials plan caps at 5,000 profiles (people and objects) and 1,000,000 monthly emails, with overages billed at $0.12 per 1,000 emails beyond that; Iterable no pricing information published on their site - contact sales required
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Customer.io and Iterable actually diverge.

Attributes where Customer.io and Iterable differ
AttributeCustomer.ioIterable
Starting price$15/monthOn request
Pricing modelsubscriptionquote

Identical on both: free tier (No), platforms (Web), user rating (Not yet rated), category (Marketing).

What people use each for

The jobs each tool is most often brought in to do.

Customer.io

  • Orchestrating multi-channel customer journeys from signup to retentionnot Iterable
  • Personalizing email and SMS campaigns using customer profilesnot Iterable
  • Triggering automated messages based on user behaviornot Iterable
  • Coordinating cross-team messaging without rebuilding campaignsnot Iterable

Iterable

  • Personalizing customer journeys across all channelsnot Customer.io
  • Optimizing retention through lifecycle messagingnot Customer.io
  • Driving upsells with intelligent segmentationnot Customer.io
  • Adapting campaigns based on real-time behaviornot Customer.io

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Customer.io

  • Essentials plan caps at 5,000 profiles (people and objects) and 1,000,000 monthly emails, with overages billed at $0.12 per 1,000 emails beyond that
  • Standard and Premium tiers show custom pricing only, and Enterprise is negotiated rate, so three of the four published tiers require a sales conversation
  • Monthly plans accept credit card only; annual billing via invoice (ACH/wire) requires the annual commitment

Iterable

  • no pricing information published on their site - contact sales required

Pricing, plan by plan

Customer.io

$15/month
  • Essentials$15/month
    • Base profiles starting at 5,000
    • Email sends: 1 million monthly
    • Community and email support
  • Standard$null/month
    • Mid-tier scaling across channels
    • Higher profile and email allowances
    • Email and priority support
  • Premium$null/month
    • Advanced custom workflows
    • Dedicated support
  • Enterprise$null/month
    • Custom pricing for dedicated infrastructure
    • HIPAA compliance
    • Dedicated hardware

Iterable

On request

No published plan breakdown. See the Iterable review.

Which should you pick?

Choose Customer.io if

Nothing in the data separates Customer.io from Iterable on the points above - pick on price and on how each one feels to use.

Customer.io review

Choose Iterable if

Nothing in the data separates Iterable from Customer.io on the points above - pick on price and on how each one feels to use.

Iterable review

Questions people ask

Is Customer.io or Iterable better?
Neither clearly leads. Customer.io starts at $15/month and Iterable at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Customer.io or Iterable?
Customer.io starts at $15/month and Iterable at On request.
Does Customer.io or Iterable run on more platforms?
Both run on Web, so platform support will not decide this one for you.
What is Customer.io best used for?
Customer.io is most often used for orchestrating multi-channel customer journeys from signup to retention, personalizing email and sms campaigns using customer profiles, triggering automated messages based on user behavior, coordinating cross-team messaging without rebuilding campaigns. Of those, orchestrating multi-channel customer journeys from signup to retention and personalizing email and sms campaigns using customer profiles are not what Iterable is typically brought in for.

Answered from the vendors’ own pages

Customer.io: How much does Customer.io Essentials cost?

Customer.io Essentials starts at $15/month and includes 5,000 base profiles with 1 million monthly email sends, community and email support, and data-driven messaging tools. Customers can choose monthly or annual billing.

Source
Iterable: How much does Iterable cost?

Iterable does not publish pricing on their website. Interested customers must contact their sales team, book a demo, or request a quote through their website for pricing information.

Source
Customer.io: What are Customer.io's usage-based add-on costs?

Beyond plan limits, Customer.io charges $0.009 per additional profile, $0.12 per 1,000 additional emails, and $10 per 100K AI credits. Messages exceeding plan limits are charged at nominal rates. Billing occurs on the subscription anniversary.

Source
Customer.io: Does Customer.io offer a startup discount?

Yes, early-stage companies that have raised under $10 million qualify for a full year free through Customer.io's Startup Program with annual billing.

Source
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