Customer.io vs Kit
Side-by-side plans, pricing, and feature gates for Customer.io and Kit, verified . Customer.io is primarily marketing automation; Kit is primarily email marketing.
Plans side by side
Every published plan from each vendor, with the headline monthly anchor price. Some prices scale with subscriber count or seats; full detail lives on each tool's page.
Customer.io
- Essentials
Entry tier with the visual workflow builder
$100/mo - Premium
Custom volume, HIPAA available, daily routines
$1,000/mo - Enterprise
Best volume pricing with dedicated infrastructure
Custom
Kit
- Newsletter
Free up to 10,000 subscribers
Free - Creator
Most popular, 1,000 subscriber anchor
$33/mo - Pro
Advanced creators and small teams
$66/mo
Limits at the entry paid tier
Compares Essentials (Customer.io) against Creator (Kit). Both are the lowest-priced non-free, non-custom plan on each side.
| Limit | Customer.io | Kit |
|---|---|---|
| Contacts | 5,000 profiles (people plus objects) | 1,000 subscribers (anchor; scales up) |
| Emails / month | 1,000,000 | · |
| Team seats | 1 | 2 |
| Automations | · | Unlimited |
When Customer.io wins
- B2C and B2B teams with custom objects in their data model (accounts, subscriptions, devices) who need messaging tied to those entities
- Product-led businesses sending behavior-triggered lifecycle messaging across email, SMS, and push
- Teams needing HIPAA compliance for healthcare or digital-health workflows
Where Customer.io is the wrong fit
- Solo creators and newsletter operators (Kit or beehiiv are the right shape)
- Small businesses that need a $0/month or $20/month entry point (MailerLite or Mailchimp Free fit better)
- Teams that want a one-click WYSIWYG email tool with no data modeling required
When Kit wins
- Independent newsletter writers and creators selling digital products
- Course creators who want one tool for emails and checkout
- Solo operators with under 10k subscribers (free plan covers them)
Where Kit is the wrong fit
- B2B sales teams that need pipeline management (use Pipedrive or HubSpot CRM)
- Brands that need deep multi-channel marketing automation (use ActiveCampaign or HubSpot)
- Teams that need granular role-based permissions
Common questions
- Is Customer.io cheaper than Kit?
- At the entry tier, Kit starts at Free versus Customer.io at $100/mo. Kit is cheaper at the entry. Pricing scales differently above that, so check the full plan grid.
- Does Customer.io or Kit have a free plan?
- Only Kit has a permanent free plan. Customer.io only offers a free trial.
Customer.io: https://customer.io/pricing/ · Kit: https://kit.com/pricing
Last verified . Pricing changes between refreshes; confirm at the vendor before purchasing.