Customer.io vs HubSpot CRM
A detailed, side-by-side comparison of Customer.io and HubSpot CRM. We compare features, pricing, ease of use, and value for money to help you make the right choice in 2026.
Reviewed by the Ikaroa team · Last updated: March 2026
Quick Verdict
HubSpot CRM edges ahead overall with a rating of 4.5/5. However, Customer.io (4.3/5) may be the better fit if you prioritise SaaS and product-led teams wanting event-driven, behaviour-based marketing automation. Read on for the full breakdown.
Customer.io vs HubSpot CRM at a Glance
Customer.io
★ 4.3Customer.io is a marketing automation platform built for tech-savvy teams. It excels at event-driven messaging, allowing you to trigger emails, push notifications, SMS, and in-app messages based on user behaviour. Popular with SaaS companies and product-led growth teams for its flexibility and developer-friendly approach.
Starting from: £79/month
Best for: SaaS and product-led teams wanting event-driven, behaviour-based marketing automation
Read full review →HubSpot CRM
★ 4.5HubSpot offers a free CRM with powerful marketing, sales, and service tools. Popular with small to mid-sized businesses for its generous free tier and intuitive interface.
Starting from: £0/month
Best for: Small to mid-sized businesses wanting a free starting point with room to grow
Read full review →Customer.io vs HubSpot CRM Feature Comparison
Here is how Customer.io and HubSpot CRM compare across the features that matter most. We have tested both platforms extensively across client implementations.
| Feature | Customer.io | HubSpot CRM |
|---|---|---|
| Free Plan Available | No | Yes |
| Starting Price | £79/month | £0/month |
| Best For | SaaS and product-led teams wanting event-driven, behaviour-based marketing automation | Small to mid-sized businesses wanting a free starting point with room to grow |
| Our Rating | 4.3/5 | 4.5/5 |
| Mobile App | Limited | Yes |
| Email Marketing | Yes | Yes |
| Automation | Limited | Yes |
| Reporting | Basic | Yes |
| Integrations | Limited | Extensive |
| API Access | Yes | Limited |
| Ikaroa Exclusive Discount | N/A | N/A |
Customer.io vs HubSpot CRM Pricing
Pricing is often the deciding factor. Here is a full breakdown of what each platform charges at every tier:
Customer.io Pricing
Essentials
£79/month
- ✓5,000 profiles
- ✓Email & in-app messages
- ✓Segmentation
- ✓Workflows
Premium
£950/month
- ✓Unlimited profiles
- ✓All channels
- ✓Custom objects
- ✓Dedicated success manager
Enterprise
Custom
- ✓Everything in Premium
- ✓SLA
- ✓HIPAA compliance
- ✓Custom implementation
HubSpot CRM Pricing
Free
£0/month
- ✓Contact management
- ✓Email tracking
- ✓Deal pipeline
- ✓Live chat
Starter
£18/month
- ✓Everything in Free
- ✓Email marketing
- ✓Ad management
- ✓Landing pages
Professional
£720/month
- ✓Everything in Starter
- ✓Automation
- ✓Custom reporting
- ✓Teams
Enterprise
£3,000/month
- ✓Everything in Professional
- ✓Advanced permissions
- ✓Predictive lead scoring
- ✓Custom objects
Not sure which to pick?
Our team has implemented both Customer.io and HubSpot CRM for clients. We can help you decide based on your specific needs.
Customer.io Pros and Cons
✓Pros
- •Excellent event-driven automation
- •Very flexible and developer-friendly
- •Strong segmentation capabilities
- •Multi-channel messaging
- •Good documentation and API
✗Cons
- •Requires technical knowledge to maximise
- •Expensive for smaller teams
- •No built-in CRM
- •Steep learning curve for non-technical users
- •UI could be more intuitive
HubSpot CRM Pros and Cons
✓Pros
- •Generous free tier with no time limit
- •Excellent user interface and onboarding
- •All-in-one platform (marketing, sales, service)
- •Huge integration marketplace (1,000+)
- •Strong community and learning resources
✗Cons
- •Gets expensive quickly at Professional tier
- •Free plan has HubSpot branding
- •Limited customisation on lower tiers
- •Annual contracts on paid plans
- •Per-seat pricing adds up for larger teams
Our Verdict: Customer.io vs HubSpot CRM
Both Customer.io and HubSpot CRM are solid options, but they serve different needs. Having implemented both for multiple clients, here is our recommendation:
Choose Customer.io if you need SaaS and product-led teams wanting event-driven, behaviour-based marketing automation. With a starting price of £79/month and a rating of 4.3/5, it offers excellent event-driven automation.
Choose HubSpot CRM if you need Small to mid-sized businesses wanting a free starting point with room to grow. Starting at £0/month with a 4.5/5 rating, it excels at generous free tier with no time limit.
Still not sure? Talk to the Ikaroa team. We have helped hundreds of businesses make this exact decision, and we are happy to point you in the right direction.
🎁 Get either product at a discount through Ikaroa Partners
Consider Open Doors Instead
Why choose between Customer.io and HubSpot CRM? Open Doors gives you the best features of both in one platform, for less. It is an all-in-one CRM with email marketing, SMS, funnels, booking, invoicing, automation, and more, starting at just £97/month with unlimited contacts.
Need implementation help?
Ikaroa can set up Customer.io or HubSpot CRM for your business, migrate your data, and train your team. We have done it dozens of times.
Free consultation. No obligation.