The verdict
On the data we hold, it's close: neither pulls ahead on features, a free plan or AI access. The choice comes down to how you work.
What the data says
- Both cover 1 of the 1 features we compared.
- Customer.io starts lower, at $100/mo against $249/mo.
- Both have an API and an MCP server, so either works with AI employees.
- In our Keep customers longer ranking, Customer.io places 6 and Recurly 8 of 14.
Side by side
| 5 points compared | ||
|---|---|---|
| Starts at | $100/mo | $249/mo |
| Free plan | No | No |
| API | Yes | Yes |
| MCP server | Yes | Yes |
| In-app guides and messages | Yes | Yes |
| Links |
Plans and pricing
Customer.io
- EssentialsFrom $100 a month billed monthly; 5,000 profiles and 1 million emails a month included.$100/mo
- PremiumFrom $1,000 a month billed yearly, with custom profile and email volume.$12,000/yr
Recurly
- Starter$249 per month plus 0.9% of billing volume; the first $40K of monthly billings are included.$249/mo
- Engage (add-on)Churn prevention add-on from $1,600 per month, billed annually; price depends on prompt volume.$19,200/yr
- RevRec (add-on)Revenue recognition add-on from $850 per month, billed annually; price depends on billing volume.$10,200/yr
Prices as the vendors list them. They change often; the final price is on their sites.
Who each is for
Choose Customer.io if…
Product and lifecycle teams at SaaS and consumer apps that want behaviour-triggered messages across email, SMS, push and in-app, and have an engineer or data-minded marketer to wire up events.
Choose Recurly if…
Subscription and digital commerce businesses with real billing volume, such as growing SaaS companies, that need failed-payment recovery, several gateways and billing handled outside their own code.
Other options worth a look
Tool·Value creationSpots churn risk early with health scoring, automated plays, and renewal forecasting for subscription businesses.Keep customers longer
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