Customer.io vs ActiveCampaign

Who owns the record: people, objects and deals

Customer.io builds on people and events. Its objects documentation describes an object as a non-person thing, such as a company, an account or an online class, that you relate to one or more people. Objects have types, attributes and relationships to people, and they can start automations: the trigger list includes an object-updated trigger and a relationship-changed trigger. One limit matters for B2B. The docs say there are no object-to-object relationships, so a company cannot be linked to a parent company inside the tool. People and objects both count as profiles on the bill.

ActiveCampaign builds on the contact. Its pricing page lists contact profiles, custom fields, tags and lists across the plans, and it puts the sales objects in add-ons and the top tier. Deal records, account records and lead scoring sit in the Pipelines add-on; custom objects are an Enterprise feature. The custom objects guide adds that records written through private apps or direct API calls require an Enterprise account. A product team that wants to push subscription records from its own backend into custom objects therefore buys the top plan.

• If a rep needs to open a contact and see the deal, its stage and its owner beside the email history, ActiveCampaign does it with the Pipelines add-on. Customer.io expects the CRM to be a separate system.
• If marketing needs to message every user at one company when that account changes plan, Customer.io's object and relationship triggers do it directly. In ActiveCampaign the same move depends on account records or on a company field you keep up to date yourself.
• Both tools take tags and custom fields, so a small list with simple attributes runs in either.

What a product event carries in each tool

Customer.io's events guide describes an event as a name plus a data object of any shape. Nested JSON is addressable with dot notation, so a cart payload with an items array can feed a segment such as items[].type equals monitor, and the same fields are available in message templates through Liquid. For a SaaS the equivalent is a plan_changed event carrying the old plan, the new plan, the seat count and the workspace ID. Events sent before a person is identified are stored as anonymous events and attached once you identify them, which helps with signup-flow tracking. The guide also warns that back-dated events with a timestamp inside the last 72 hours can still start automations, which matters to anyone backfilling history.

ActiveCampaign's event tracking guide works differently. You switch tracking on, copy an Event Key, optionally whitelist event names so automations can pick them, and post to its tracking endpoint with the account ID, the key, an event name, an event-data field and the visitor's email. The guide's example puts a file URL in that field and does not describe nested properties. Two rules shape the design: every event must belong to a contact that already exists, otherwise the log is not written, and the account API is held to 5 requests per second. In practice a rich payload has to be flattened into contact fields or split across several named events.

The rate limit has a practical size. At 5 requests per second ActiveCampaign accepts at most 5 x 3,600 = 18,000 calls an hour, so replaying 90,000 historical events takes at least five hours in one account. Customer.io sizes its batch endpoints by bytes instead: the Pipelines API accepts 64 KB per single request and 1 MB per batch, and the older Track API 32 KB and 500 KB.

Automation building blocks and the limits on each plan

In Customer.io's automation concepts, each automation has a trigger that decides who enters and when, an optional goal, and exit criteria. Triggers can be an attribute or segment change, an event, a form submission, a date, an object update, a relationship change or a webhook. Date triggers suit renewal reminders. For segment-triggered automations you choose between letting current matches in immediately or admitting only future additions. Choosing the first option on a large segment mails every existing match the moment you start, so make that choice deliberately.

ActiveCampaign's limits are plan-shaped. Starter caps an automation at 5 actions, and the pricing page lists unlimited actions from Plus upward. Business goals are capped at 15 active on Starter, 25 on Plus, and 200 on Pro and Enterprise. A renewal sequence with a 30-day notice, a 7-day reminder, a branch for accounts that already upgraded and a sales alert is already past 5 steps, so Plus is the realistic floor: $49 a month at 1,000 contacts and $145 at 5,000.

Cost over a year at four list sizes

At 5,000 contacts or profiles, Customer.io Essentials is $100 a month, so 12 x $100 = $1,200 a year. ActiveCampaign Plus is $145 a month, 12 x $145 = $1,740 a year, which is $540 more. Pro is $205 (12 x $205 = $2,460) and Starter is $79 (12 x $79 = $948), with one user and a 5-action ceiling on Starter.

At 10,000, Customer.io is $145 a month: 12 x $145 = $1,740. ActiveCampaign Starter is $149 ($1,788), Plus $189 ($2,268), Pro $375 ($4,500) and Enterprise $589 ($7,068). Plus costs $528 a year more than Customer.io, and Pro, the cheapest plan with three users, costs $2,760 more.

At 20,000, Customer.io is $235 a month, or $2,820 a year. ActiveCampaign Starter is $311 ($3,732), Plus $329 ($3,948), Pro $549 ($6,588) and Enterprise $785 ($9,420). Plus costs $1,128 more per year and Pro $3,768 more.

At 50,000, the Customer.io selector shows $505+ a month, so the year is at least 12 x $505 = $6,060. ActiveCampaign does not offer Starter at that size: Plus is $609 ($7,308), Pro $969 ($11,628) and Enterprise $1,169 ($14,028). Plus is up to $1,248 a year above Customer.io, and the exact figure depends on what Customer.io quotes above the selector's top stop.

Overage on Customer.io is small compared with a plan jump. A workspace with 9,000 users and 1,200 company objects holds 10,200 profiles. Against the 10,000-profile plan that is 200 over, and at $0.009 each the overage is 200 x $0.009 = $1.80, billed on the following invoice. The same documentation says deleted profiles count for the month they existed, so a mid-month purge does not lower that month's bill.

• ActiveCampaign prices are monthly figures billed annually, so the year is committed up front. Customer.io Essentials is billed monthly, and Premium starts at $1,000 a month billed yearly, which is $12,000.
• Prices come from the Customer.io pricing page and the ActiveCampaign pricing page, read on 2026-10-07.
• Customer.io's billing rules, including high-watermark counting and the overage rates, are in its billing documentation.

Seats, support and what the entry plans leave out

Customer.io Essentials includes unlimited seats, email and community support, two workspaces, two object types, and standard role-based permissions. It does not include chat support, managed deliverability, custom roles or anonymous messages, and the plan term is monthly. Premium starts at $1,000 a month billed yearly and adds the custom profile volume, elevated limits and premium support.

ActiveCampaign's seat count steps up with price: 1 user on Starter and Plus, 3 on Pro, 5 on Enterprise. Starter also carries limited segmentation and the 5-action cap, Plus adds standard segmentation and landing pages, Pro adds advanced segmentation, predictive and conditional content and attribution, and Enterprise adds premium segmentation, custom objects, single sign-on and a dedicated account team.

The two tools behave differently when you outgrow the plan. ActiveCampaign's contact-limit article says that at the limit you cannot send email campaigns, running automations skip their Send an email actions, and Starter tops out at 25,000 contacts. It recommends switching on auto-upgrade. Customer.io keeps sending and bills the overage, which is gentler on a launch-day signup spike.

Where the CRM lives in each setup

Customer.io treats the CRM as a source. Its Salesforce integration runs syncs, with templates for contacts, leads, accounts and account-contact relationships; the last template links the people created by the contact sync to the account objects created by the account sync, matching people by email and accounts by Salesforce ID. The HubSpot integration offers templates for contacts and companies. Customer.io's pricing page marks Essentials with basic data integrations and the higher plans with basic and premium ones. The documentation I read does not say which group a CRM sync falls in, so ask before you assume an Essentials account includes it.

ActiveCampaign treats the CRM as either its own add-on or an Enterprise connector. Standard CRM integrations (Freshsales, Pipedrive, Zoho and others) come with every plan. Premium ones, named on the pricing page as Salesforce and Microsoft Dynamics, are listed on Enterprise, which is $145 a month at 1,000 contacts and $589 at 10,000. A Salesforce shop that wants ActiveCampaign therefore pays Enterprise, unless it moves the sales team onto the Pipelines add-on.

• Sales already lives in Salesforce or HubSpot and engineers will send events: Customer.io's sync-in model keeps the CRM as the owner of deals.
• No CRM yet, two reps, and a marketer running everything: the Pipelines add-on can remove one tool, but ask for its price, because the selector readout does not show one.

Moving from ActiveCampaign to Customer.io

1. Export from ActiveCampaign. Per its export guide, open Contacts, use the ellipsis, choose Export, pick the fields and run it in the background. The download stays available for 7 days. The CSV carries custom fields, lead scores, deal scores and tags in a single column; contact notes cannot be exported.
2. Choose the identifier. Customer.io needs an id, email or phone column to match rows. If your product has its own user ID, use it, because it will be the key your events use later.
3. Turn tags into something queryable. A single tags column becomes booleans, dates or a plan attribute in Customer.io, which you can segment on, so decide the attribute list before you import.
4. Import people through People, Add people, CSV or Google Sheets. The import guide caps files at 100 MB and says processing takes roughly one minute per 20 to 30 thousand rows. Map the columns, preview the result, then import.
5. Create companies as objects, import the person-to-company relationships, and connect your CRM as a source so deals and lifecycle stage arrive as attributes.
6. Replace each ActiveCampaign event call with a Customer.io track call and send the full payload, not a single value. Rebuild automations one at a time; choose carefully between admitting current matches and future additions only, or you will mail the whole base.
7. Keep ActiveCampaign running until the new goals and exit conditions fire correctly. Plans are billed annually, so check the cancellation date before you pick a cutover.

Moving from Customer.io to ActiveCampaign

1. Pick the plan from the rebuild, not from the list size. Plus is the floor to avoid the 5-action cap, Pro is the floor for three users, and Enterprise is needed for custom objects, API-written object records, five users or the Salesforce connector.
2. Get your people out of Customer.io through the People view, the API or a warehouse sync. I did not find a CSV export article in the docs I read, so confirm the current route in the app. Event history will not travel in a people file.
3. Prepare the file for ActiveCampaign's CSV rules: every row needs an email address or phone number, dates use YYYY-MM-DD, multiple tags are comma-separated, the file is UTF-8, and line breaks and emojis must go. For wide files it recommends splitting and waiting an hour between imports.
4. In the import tool, import opted-out people as Unsubscribed contacts, and switch the Trigger Automations option off for the first run so the import does not start automations.
5. Turn on Event Tracking, copy the Event Key, whitelist the event names you will use, and repoint your product code. Pace the sender to 5 requests per second and create each contact before its first event.
6. Rebuild the journeys as automations and recreate company data as accounts if you bought the Pipelines add-on. Retire the Customer.io workflows only after the new exits have been checked on a small slice.