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Marketing · head to head

Customer.io vs June

Customer.io logo

Customer.io

Marketing

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

From
$15/month
Rated
-
Full reviewWebsite
June logo

June

Marketing

B2B product analytics

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only June has a free tier, so it costs nothing to try first.
  • 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; June the pricing page lists a single all-in-one plan with no price, no minimum and no named cost driver
  • Prices and features above were last checked on 30 August 2026.

Where they differ

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

Attributes where Customer.io and June differ
AttributeCustomer.ioJune
Starting price$15/monthFree
Pricing modelsubscriptionfreemium
Free tierNoYes
FoundedUnknown2021

Identical on both: platforms (Web), user rating (Not yet rated), category (Marketing).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Customer.io

Nothing recorded that June does not also cover.

Only in June

  • B2B analytics
  • Account tracking
  • Cohort analysis
  • Dashboards
  • Slack
  • Segment
  • GDPR
  • Cloud deployment

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 June
  • Personalizing email and SMS campaigns using customer profilesnot June
  • Triggering automated messages based on user behaviornot June
  • Coordinating cross-team messaging without rebuilding campaignsnot June

June

  • Company-level product analytics for B2B SaaSnot Customer.io
  • Spotting churn risk from account usage patternsnot Customer.io
  • Pushing product usage data into Salesforce, HubSpot or Attionot 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

June

  • The pricing page lists a single all-in-one plan with no price, no minimum and no named cost driver
  • There is no startup plan; the vendor states June is a fit for companies with at least $1M of ARR
  • Setup fees are charged separately and the vendor states they vary based on implementation complexity
  • The vendor states June is a poor fit for products with a large user base but low revenue per user

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

June

Free
  • FreeFree
    • Basic analytics
    • 1 user
    • 30 days retention

Which should you pick?

Choose Customer.io if

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

Customer.io review

Choose June if

  • You need b2b analytics.
  • You want to start without paying.
  • You also want account tracking.
June review

Questions people ask

Is Customer.io or June better?
Neither clearly leads. Customer.io starts at $15/month and June at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Customer.io or June?
June has a free tier; the other does not. Paid plans start at $15/month for Customer.io and Free for June.
Does Customer.io or June run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use June for free?
Yes. June has a free tier, so you can try it without paying. Customer.io starts at $15/month.
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 June is typically brought in for.
What can Customer.io do that June cannot?
June covers B2B analytics, Account tracking, Cohort analysis, Dashboards.

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
June: How much does June cost?

June does not publish specific pricing. Customers begin with a free trial to discuss custom pricing with the June team. Setup fees vary based on implementation complexity.

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
June: Is June available for small SaaS companies?

June is positioned for companies with at least $1M annual recurring revenue. Smaller companies may explore the platform via a free trial.

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
June: What business problem does June solve that justifies its cost?

June focuses on churn prevention and customer retention analytics. The pricing page indicates preventing even a single customer from churning can save $50K, positioning it as a retention investment tool.

Source
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