Marketing · head to head
Customer.io vs Unbounce

Customer.io
Marketing
Data-driven messaging for teams getting started, scaling and beyond
- From
- On request
- Rated
- -

Unbounce
Marketing
Landing page platform with AI-powered conversion optimisation.
- From
- Free
- Rated
- -
The short version
- Only Unbounce has a free tier, so it costs nothing to try first.
- Each has a real cost: Customer.io essentials plan caps at 5,000 profiles (people and objects) and 1,000,000 monthly emails, with overages billed at $0.12 per 1,000 emails beyond that; Unbounce starter tier severely limited to 5 pages and 500 monthly visitors; inadequate for most marketing campaigns
Where they differ
Only the attributes on which Customer.io and Unbounce actually diverge.
| Attribute | Customer.io | Unbounce |
|---|---|---|
| Starting price | On request | Free |
| Free tier | No | Yes |
| Platforms | Web | Web, API |
Identical on both: pricing model (subscription), user rating (Not yet rated), category (Marketing).
What people use each for
The jobs each tool is most often brought in to do.
Customer.io
No use cases recorded yet. See the Customer.io review.
Unbounce
- Marketing agencies and freelancers running multiple client campaignsnot Customer.io
- SaaS companies optimising landing pages for customer acquisitionnot Customer.io
- E-commerce businesses testing product landing pages and promotional campaignsnot Customer.io
- B2B marketers building dedicated pages for specific customer segmentsnot Customer.io
- Product teams using A/B testing to improve conversion rates without design resourcesnot Customer.io
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Customer.io
- Essentials plan caps at 5,000 profiles (people and objects) and 1,000,000 monthly emails, with overages billed at $0.12 per 1,000 emails beyond that
- Standard and Premium tiers show custom pricing only, and Enterprise is negotiated rate, so three of the four published tiers require a sales conversation
- Monthly plans accept credit card only; annual billing via invoice (ACH/wire) requires the annual commitment
Unbounce
- Starter tier severely limited to 5 pages and 500 monthly visitors; inadequate for most marketing campaigns
- All tiers have monthly visitor caps; campaigns exceeding thresholds require upgrading to higher-priced plans
- Optimize tier ($249/mo) capped at 50,000 monthly visitors; campaigns beyond this require custom Concierge pricing
- AI copywriting and advanced optimisation features not explicitly detailed in lower tiers
- Full customisation beyond templates requires adding custom JavaScript, CSS and HTML
- FIPS 140-2 or advanced security features not documented as available
Pricing, plan by plan
Customer.io
On requestNo published plan breakdown. See the Customer.io review.
Unbounce
Free- Starter$29/month ($22 annually)
- 5 pages
- 500 monthly visitors
- 1 user
- Build$99/month ($74 annually)
- Unlimited pages
- 20,000 monthly visitors
- 1 user
- Experiment$149/month ($112 annually)
- Unlimited pages
- 30,000 monthly visitors
- 3 users
- Optimize$249/month ($187 annually)
- Unlimited pages
- 50,000 monthly visitors
- 5 users
Which should you pick?
Choose Customer.io if
Nothing in the data separates Customer.io from Unbounce on the points above - pick on price and on how each one feels to use.
Questions people ask
- Is Customer.io or Unbounce better?
- Neither clearly leads. Customer.io starts at On request and Unbounce at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Customer.io or Unbounce?
- Unbounce has a free tier; the other does not. Paid plans start at On request for Customer.io and Free for Unbounce.
- Does Customer.io or Unbounce run on more platforms?
- Customer.io runs on Web. Unbounce runs on Web, API.
- Can I use Unbounce for free?
- Yes. Unbounce has a free tier, so you can try it without paying. Customer.io starts at On request.
Answered from the vendors’ own pages
Unbounce: Does Unbounce include A/B testing?
Yes. All paid plans include A/B testing capabilities. The one-click testing tool is designed for marketers without requiring technical or design support.
SourceUnbounce: What is Smart Traffic?
Smart Traffic is AI-powered optimisation that automatically routes visitors to their best-matching landing page variant. The feature delivers claimed average conversion improvements of 30%.
SourceUnbounce: Is there a free trial?
Yes. Unbounce offers a free 14-day trial with no credit card required.
SourceRelated pages
More on Customer.io
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