ActiveCampaign vs Customer.io for SaaS: Pricing (2026)

Prices checked 7 October 2026; each price links to the vendor page it came from. ActiveCampaign's figures are its contact selector at the stop named, on annual billing for the plan cards; Customer.io's are its profile selector, billed monthly.

Both products send automated email, so the comparison tends to get stuck on feature lists. The more useful split is what each one treats as the main record. ActiveCampaign is organised around contacts, tags, lists, forms and CRM deals: the commercial story of a lead. Customer.io is organised around people and the events they generate inside your product: the behavioural story of a user. A message that responds to a deal moving to "proposal sent" belongs in the first. A message that responds to "no teammate invited three days after sign-up" belongs in the second.

Pricing units differ too. ActiveCampaign charges by email contacts and caps monthly sends as a multiple of that number; Customer.io charges by profiles, which on its Essentials plan include both people and objects, and includes a large email allowance. That one structural difference decides who is cheaper for a product that sends frequent notifications.

What each one costs at 5,000, 10,000 and 20,000 contacts

ActiveCampaign's selector reads a different price for every plan at every contact count, and the cheapest plan is not always the one a SaaS team can use. Starter, for example, limits automations to 5 actions each and lists a single user. The table below shows Starter and Plus, because Plus is the first plan with unlimited automation actions.

For a like-for-like automation setup (unlimited actions) the gap widens with size: at 5,000 people ActiveCampaign Plus is $145 against $100, a difference of $45 a month; at 10,000 it is $189 against $145, a difference of $44; at 20,000 it is $329 against $235, a difference of $94. The lowest ActiveCampaign tier looks competitive at 5,000 ($79), but at that tier you give up unlimited automation actions and cross-channel features.

The send cap matters more than the headline price for a product that emails often. On ActiveCampaign Plus at 10,000 contacts the allowance is 10 × 10,000 = 100,000 sends a month, which is about ten emails per contact. A product that sends a daily usage alert to 10,000 users would use that in ten days. Customer.io lists 1 million emails on Essentials at the entry stop and prices extra emails at $0.12 per 1,000, so 200,000 extra emails would add 200 × $0.12 = $24.

Two billing details cut the other way. ActiveCampaign's plan cards say "billed annually", so a month-to-month payer should confirm what the monthly price is. Customer.io counts objects as profiles, so a B2B product that models 2,000 company objects among 8,000 people is billed near the 10k mark, and its billing documentation says a profile that existed in the month counts even if you delete it afterwards.

When a sales team is in the loop

ActiveCampaign's plan cards describe marketing automation, email, landing pages, predictive and conditional content, attribution and conversion tracking, and a CRM on every plan. For a SaaS company that sells to teams through demos, that bundle covers a lot of the funnel: a visitor fills a form, receives a nurture sequence, gets scored, and lands in a rep's deal list with a follow-up task.

Customer.io does not try to be that record. If a rep needs to see a deal, you keep the CRM elsewhere (a separate sales tool) and send Customer.io the facts it needs, such as the account's owner and plan, as attributes. The result is two systems, and the question is whether your sales process justifies one more integration or whether ActiveCampaign's built-in CRM removes it.

One limit to check on the ActiveCampaign side: custom objects are listed only on Enterprise. A B2B product that wants a "workspace" or "subscription" as a record in its own right will either flatten that into contact fields or move to the $145-and-up tier.

When product events decide who gets a message

Customer.io's pricing page lists a visual workflow builder, an AI Agent, email, push, in-app, SMS and WhatsApp, with transactional email included. The reason SaaS teams pick it is that the unit of work is an event your application sends: signed up, created a project, invited someone, hit a limit, payment failed. A workflow can wait for the next event, branch on a property and stop when the user does the thing you were nudging.

What you take on is data work. Someone has to define the event names, send them reliably from the backend, and decide how companies and people relate. That is easier with an engineer on call and harder when the lifecycle owner is a marketer with no developer time. ActiveCampaign is friendlier there, since forms, tags and site tracking need less code, though product events then have to be mapped into tags or fields before a workflow can use them.

The pricing page also states US and EU data centers on every plan and a published DPA, and lists HIPAA compliance on Premium. ActiveCampaign publishes a DPA template; its pricing page does not state a hosting region, so ask where data is stored if that is a procurement requirement.

Moving from one to the other

ActiveCampaign to Customer.io is a re-modelling task. Export contacts with their custom fields, tags and list memberships, and decide which tags become attributes and which become segments. Automations rebuild as workflows, but each one needs a new trigger: where ActiveCampaign started from a tag or a form, Customer.io starts from an event, so the application has to send it. Deals do not migrate into Customer.io, so leave the CRM running or move it to a dedicated sales tool first. Export unsubscribes and carry them over before the first send.

Customer.io to ActiveCampaign runs the other way. Flatten events into the contact fields and tags ActiveCampaign automations read, and confirm the send cap for the plan you are buying: 10x contacts is low for notification-heavy products. Re-create transactional mail elsewhere or buy the transactional add-on, since it is not part of the plan.

For both, run a parallel period of at least one billing cycle, route a single audience through each system, and compare delivered, bounced and unsubscribed counts before moving the rest.

Verdict

If someone in sales opens deals and you want email, CRM and landing pages in one login, ActiveCampaign is the practical choice, with Plus ($145 at 5,000 contacts) the first plan that removes the 5-action cap. If your product creates the events that matter and you send notifications at volume, Customer.io is cheaper than ActiveCampaign Plus at every stop read here and includes far more email.

Related reading: ActiveCampaign vs Loops for the lighter email-first option, HubSpot vs Customer.io for a bigger CRM, and Klaviyo vs Customer.io. Leaving ActiveCampaign? See ActiveCampaign alternatives. For motion-specific picks, see sales-led SaaS and product-led SaaS.