Starting price$100/moEssentials, 5,000 profiles and 1 million emails a month, billed monthly
Free trial / planFree trial (length not stated)
Vettlo score74/100
G2 user rating4.4/5999 reviews
Customer.io Review (2026): Pricing, Pros and Cons
We may earn money when you click links on this page. Partner compensation may affect which products we include and where they appear. See how we make money.
Short answer
Customer.io ranks #5 of 5 in our marketing automation tools ranking (74/100). Best for product-led companies messaging users on behavior. Paid plans start at $100/mo (Essentials, 5,000 profiles and 1 million emails a month, billed monthly).
What is Customer.io?
Customer.io is a messaging automation platform that triggers journeys from product and behavioral data. Essentials ($100 a month) includes 5,000 profiles, 1 million emails, the visual workflow builder, journeys, segments and 2 object types; extra profiles cost $0.009 each and extra emails $0.12 per 1,000. Premium (from $1,000 a month, billed annually) adds 10 object types, premium support, 90-day onboarding and HIPAA compliance at extra cost.
Who it's best for
SaaS and app companies whose engineers send event data and whose marketers build lifecycle journeys from it.
Why we rank it
Journeys run on events and custom objects rather than only list membership, and Essentials includes 1 million emails a month.
Pros and cons
Strengths
- Journeys triggered by product events and objects
- 1 million emails a month on Essentials
- Startup program: 12 months free for qualifying startups
Watch-outs
- No lead scoring or CRM listed
- Needs developer help to send event data
- Premium starts at $1,000 a month
Skip it if: You're a B2B team that needs lead scoring and a sales handoff.
Customer.io pricing
Paid plans start at $100/mo (Essentials, 5,000 profiles and 1 million emails a month, billed monthly). Free plan or trial: Free trial (length not stated).
From Customer.io's pricing page, checked on the date at the top of this review. See how it compares on price in our marketing automation tools pricing overview.
How we scored Customer.io
Marketing Automation score: 74/100
Automation & journeys (25%)4.5/5
Lead management & scoring (15%)3/5
Email & channels (15%)4/5
Reporting & attribution (15%)3.5/5
Ease of use & setup (10%)3/5
Price & value (20%)3.5/5
Each criterion is rated 0 to 5 and weighted for the category. See our methodology.
How Customer.io compares
| # | Tool | Best for | Starting price | Score |
|---|---|---|---|---|
| 1 | ActiveCampaign | Small and mid-sized teams that want deep automation at a low price | $15/mo | 86/100 |
| 2 | HubSpot Marketing Hub | Best all-in-one platform for teams that already use HubSpot CRM | $7/seat/mo | 85/100 |
| 3 | Brevo | Budget automation priced by emails sent | $9/mo | 82/100 |
| 4 | Salesforce Marketing Cloud Account Engagement | B2B teams that run sales on Salesforce | $1,250/mo | 76/100 |
| 5 | Customer.io | Product-led companies messaging users on behavior | $100/mo | 74/100 |
Alternatives and comparisons
Customer.io FAQ
How much does Customer.io cost?
Paid plans start at $100/mo (Essentials, 5,000 profiles and 1 million emails a month, billed monthly). Free plan or trial: Free trial (length not stated).
Is Customer.io worth it?
Customer.io scores 74/100 in our marketing automation tools ranking, where it is best for product-led companies messaging users on behavior. It's a weaker fit if: you're a B2B team that needs lead scoring and a sales handoff.
Does Customer.io have a free plan or trial?
Free trial (length not stated).
What are the best Customer.io alternatives?
In our marketing automation tools ranking, the closest alternatives are ActiveCampaign, HubSpot Marketing Hub and Brevo.