Klaviyo
klaviyo.com
Email and SMS built around e-commerce data
from $20/moFree plan
Customer.io
Behavioural messaging for product teams
Free trialEmail MarketingSince 2012
from $100/moVisit customer.io
What Customer.io is
Triggers messages from product events rather than lists — email, push, in-app and SMS driven by what a user actually did. Data-warehouse-friendly.
What Customer.io has cost
We have read this pricing page 14 times since Jan 2021, including archived copies of it. Each figure below was pulled from the page itself, not from a summary of it.
- $150/moJan 2021 – Aug 2022 · Basic · 4 readings · archived page
The entry plan changed name here, from Basic to Essentials. That is a different plan, so the two prices are not a rise or a cut.
$100/moJan 2023 – Sept 2026 · Essentials · 10 readings · archived page
Gaps are ours, not the vendor's: where a capture was unreadable, or the price could not be tied to a plan at all, no reading was recorded rather than a guess. See every price change we can stand behind.
Price held · 3 years
Customer.io Essentials has cost $100/mo since January 2023.
10 readings of its own pricing page agree, starting from the January 2023 capture. How the award works
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<a href="https://www.saasdealer.com/tools/customer-io" rel="nofollow"><img src="https://www.saasdealer.com/badges/price-held/customer-io.svg" alt="Customer.io: price held since January 2023, verified by saasdealer" width="300" height="72"></a>People use it to
Current offers
Free trial
Free trial available
Trial length and card requirement are set by the vendor.
Customer.io alternatives
Other tools in email marketing that cover similar ground. Full comparison.
Where Customer.io sits on price
Entry prices across Email Marketing, cheapest first.
- Brevo$10.80
- MailerLite$12
- Mailchimp$13
- ActiveCampaign$15*
- Postmark$15
- Klaviyo$20*
- Mails.ai$20
- Resend$20
- SendGrid$20*
- Customer.io$100
8 of these 12 prices were read from the vendor's own pricing page; the rest are marked * and are indicative. The median is taken across the 7 verified prices in Email Marketing. Showing the 10 cheapest.
Customer.io pricing questions
- How much does Customer.io cost?
- Customer.io starts at $100 a month on its Essentials plan, billed monthly. That figure was read from customer.io's own pricing page on 21 September 2026.
- Does Customer.io have a free plan?
- No ongoing free plan. Customer.io offers a free trial, after which a paid plan is required.
- What is Customer.io used for?
- Triggers messages from product events rather than lists — email, push, in-app and SMS driven by what a user actually did. Data-warehouse-friendly. People mainly use it to send lifecycle emails, onboard users, send push notifications.
- What are the best alternatives to Customer.io?
- The closest alternatives in the same category are Klaviyo, Mailchimp, Kit, ActiveCampaign. Klaviyo starts lower at $20 a month; Mailchimp starts lower at $13 a month; Kit starts lower at $33 a month; ActiveCampaign starts lower at $15 a month. Klaviyo, Mailchimp and Kit publish a free plan.