Customer.io vs Iterable (2026): which should you pick?
As of Nov 12, 2026, Customer.io grades higher than Iterable: 2.2 against 1.8 out of 4.0.
Checked Oct 17, 2026 and Nov 12, 2026 · graded Oct 17, 2026 and Nov 12, 2026 by ToolGPA
Customer.io grades higher on the free plan and platforms. Iterable grades higher on value for money. They get the same grade on features and ease of use.
Price, platforms and features side by side. The table says where each price was read and when.
Customer.io
Data-driven email, SMS, push and in-app messaging for product teams
Which one is for you
Pick Customer.io if
- Fits if you run a software or app company and want messages triggered by what users do
- Works for startups that raised under $10 million, who can get up to a year of Essentials free
Look elsewhere if
- Pricey if you just want a newsletter, at $100 a month before you've sent anything
- Skip it if nobody on your team can send data through an API or SDK
- Tight if you need chat support or onboarding help, which start on Premium at $1,000 a month billed yearly
- Watch out: extra emails cost $0.12 per 1,000, extra profiles $0.009 each, and SMS is priced on request
- Watch out: every account is reviewed by hand before it can send
Pick Iterable if
- Fits if you are a large team that wants campaigns and journeys on one platform
- Makes sense if you will book a demo before buying
Look elsewhere if
- Skip it if you want a price on the page, since none is shown
- Not for you if you want a free plan or a trial
- Skip it if you run a small list, as the pages target enterprise buyers
- Watch out: contact limits and send limits are not listed
- Watch out: no integrations were listed on the pages read, so check your stack
How we grade them
| 2.2GPACustomer.ioFair | 1.8GPAIterableWeak | |
|---|---|---|
| Value for money | D$100 a month for 5,000 profiles, many times what email tools start at and well into the dearest tenth. It does include 1 million emails, unlimited users and unlimited push and in-app messages. Premium jumps to $1,000 a month billed yearly. | CNo price is published. The site sends visitors to book a demo, so there is no figure to set against the category. |
| Free plan and trial | CNo free plan, but there's a 14-day trial with up to 5,000 messages across every channel. Startups that raised under $10 million can get up to a year of Essentials free. | FNo free plan and no self-serve trial on the pages read. |
| Features | BVisual journeys across email, SMS, push, in-app, WhatsApp, LINE and webhooks, custom objects, an AI segment builder, warehouse syncs, transactional email and a design studio with version history. It covers the job across all those channels, built around product data. | BCampaigns, journeys, no-code audiences, an AI layer, a catalog and analytics. The listing shows no gap in the core job. |
| Ease of use | CNo App Store rating on record. Before the first message your product has to send people and events through the API, SDKs or a warehouse sync, and every account is checked by hand before it can send. | CSold through a demo, with data and channels to connect. No rating on record. |
| Platforms and integrations | BWeb, with Segment, Snowflake, Salesforce, Mixpanel, Amplitude, Twilio, Google Ads and Facebook Lead Ads, an API, mobile SDKs and an MCP server. There's no desktop app, so B is the top. | CWeb only, and the pages read list no integrations. |
| Best for | product teams messaging users from app data | big brands running cross-channel campaigns |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Customer.io and Iterable. How we grade
Where they differ
- Customer.io also covers business texting.
- Iterable also covers sMS marketing.
At a glance
| Customer.io | Iterable | |
|---|---|---|
| Pricing | Free trial | Paid |
| Starts at | $100 per month for up to 5,000 profiles, billed monthly | Not published |
| Free plan | None | None |
| Free trial | 14-day free trial with up to 5,000 messages across all channels | None listed |
| Web | ||
| Made by | Peaberry Software, Inc. | Iterable |
| Price read from | customer.io | Not confirmed |
| Checked | Oct 17, 2026 | Nov 12, 2026 |
Worth knowing
Customer.io
- Usage beyond the plan costs extra: $0.12 per 1,000 emails on every plan, and AI credits at $10 per 100,000 on Essentials and Premium.
- Every account is reviewed by hand before it can send messages.
- SMS volume is priced on request on every plan.
- Chat support, onboarding help and custom roles start with Premium, which is billed yearly from $1,000 a month.
Iterable
- No pricing is published; the site directs visitors to book a demo.
- No free plan or self-serve trial is described on the pages read.
- The pages read are written for enterprise buyers and do not list plan tiers, contact limits or send limits.
Key features
Customer.io
- Journeys and workflow builder
- Cross-channel campaigns built in a visual workflow builder, with send-time optimization, LLM actions and API-triggered broadcasts.
- Many channels
- Email, transactional email, SMS, push, in-app messages, WhatsApp, LINE and webhooks from one account; push and in-app are unlimited.
- Profiles and custom objects
- Store people and objects such as accounts or courses with unlimited attributes, then segment on them, including an AI segment builder.
- Data in and out
- Unlimited API calls, mobile SDKs, reverse ETL from a data warehouse and an MCP server; warehouse destinations need Premium.
- Design Studio
- Drag-and-drop and code editors with reusable components, version history, AI translation and 25 inbox previews.
- AI Agent
- A beta agent that carries out tasks in the account, with scheduled routines: one weekly task on Essentials and five daily on Premium.
Iterable
- Campaigns
- Build one-time and recurring campaigns from reusable content blocks, with dynamic content blocks that pull in real-time data.
- Journeys
- A visual journey builder connects email, SMS, push and in-app messages in one studio, with paths that respond to customer events.
- No-code audiences
- A no-code audience builder creates dynamic audiences that update as behavior changes, plus predictive audiences based on likelihood to convert or churn.
- Nova AI layer
- Iterable calls its intelligence layer Nova. It describes agents that help build audiences, journeys and campaigns, and decisioning on timing, content and channel.
- Catalog and analytics
- The product menu lists a Catalog feature and Insights and Analytics alongside campaigns, journeys and audiences.
Plans
Customer.io
Essentials$100
per month for up to 5,000 profiles, billed monthly
1 million emails a month, unlimited users, 2 object types, visual workflows and the AI Agent. Extra profiles cost $0.009 each and extra emails $0.12 per 1,000.
Premium$1,000
per month and up, billed yearly
Custom profile and email volume, 10 object types, chat support, 90-day onboarding, managed deliverability and HIPAA compliance at extra cost.
EnterpriseCustom
Dedicated hardware, audit logging, a customer success manager, priority technical support and a shared Slack channel.
Iterable
Pricing could not be confirmed. See iterable.com.
Ways to pay less
Customer.io
- Startups
Up to 12 months free for startups
Startups new to Customer.io that have raised less than $10 million can get up to 12 months of Essentials features free, with up to 30,000 profiles.
Iterable
No public discounts listed.
Common questions
Which is cheaper, Customer.io or Iterable?
As of Nov 12, 2026, Customer.io starts at $100 per month for up to 5,000 profiles, billed monthly, and Iterable has no price we could confirm.
Which has a free plan, Customer.io or Iterable?
As of Nov 12, 2026, neither Customer.io nor Iterable has a free plan. Customer.io has a free trial.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.