MailBeez
MailBeez V5 arrives with a redesigned workspace, dark mode and V5-ready modules.
Comparison · Mkt Auto
Kit (formerly ConvertKit) vs Customer.io
A side-by-side editorial comparison of Kit (formerly ConvertKit) and Customer.io — release velocity, themes, recent moves, and the top alternatives to consider.
Kit (formerly ConvertKit) vs Customer.io: at a glance
| Feature | Kit (formerly ConvertKit) | Customer.io |
|---|---|---|
| Sector | Mkt Auto | Mkt Auto |
| Velocity score | 6.3 | 5.0 |
| Sparks · 30d | 0 | 0 |
| Top themes | email-marketing, mcp, landing-pages, creator-tools | experiments, design-studio, sms, email-analytics |
| Last editorial update | 2mo ago | 4d ago |
| Website | Visit → | — |
What is Kit (formerly ConvertKit)?
Kit handed page-building to an agent, then went back to cleaning up the subscribers list
The Kit MCP crossing from reading a creator's list to building and editing landing pages remains the defining recent release. Since then the work has been ordinary interface repair on the subscriber surface: the Subscribers page was reorganised around search and filtering, and bulk actions became a floating menu that follows the scroll instead of sitting at the top of the list. Creator Network connection requests and custom favicons round out the window.
What is Customer.io?
Customer.io puts experiments inside automations and makes Design Studio the default editor.
Customer.io is consolidating messaging work into its own canvas. On November 9 Design Studio became the default email editor, covering SMS, WhatsApp and inbox messages too, and Experiments arrived for testing whole multi-step paths inside an automation. The week before brought dynamic SMS senders by country, click heatmaps and per-language rules for auto-translate, after sign-up forms, the Object trigger and new API keys.
Kit (formerly ConvertKit) vs Customer.io: editorial side-by-side
Kit (formerly ConvertKit)
6.3MKT AUTO
Kit handed page-building to an agent, then went back to cleaning up the subscribers list
◆ Current state
The Kit MCP crossing from reading a creator's list to building and editing landing pages remains the defining recent release. Since then the work has been ordinary interface repair on the subscriber surface: the Subscribers page was reorganised around search and filtering, and bulk actions became a floating menu that follows the scroll instead of sitting at the top of the list. Creator Network connection requests and custom favicons round out the window.
◆ Where it's heading
The Kit MCP is the axis, and it has already made its jump — from read-and-analyze in May to producing the published artifact in July. What follows is consolidation: the manual surfaces are being tidied so the things an agent can do and the things a creator does by hand sit on comparable footing. Nothing in this window extends the MCP itself, which makes the current period a pause rather than a redirection.
◆ Prediction
Expect the MCP surface to extend to more of the artifacts Kit publishes now that landing pages have proven the pattern. The subscriber-page work reads as a finished cleanup rather than the start of a larger rebuild.
Customer.io
5.0MKT AUTO
Customer.io puts experiments inside automations and makes Design Studio the default editor.
◆ Current state
Customer.io is consolidating messaging work into its own canvas. On November 9 Design Studio became the default email editor, covering SMS, WhatsApp and inbox messages too, and Experiments arrived for testing whole multi-step paths inside an automation. The week before brought dynamic SMS senders by country, click heatmaps and per-language rules for auto-translate, after sign-up forms, the Object trigger and new API keys.
◆ Where it's heading
Releases are moving testing, translation and content creation into the places teams already build journeys, so fewer steps need an outside tool. Daily-cadence shipping across messaging, data and AI translation suggests a broad push rather than one flagship bet.
◆ Prediction
Expect Design Studio to add the channels it says are coming and Experiments to gain reporting or winner automation inside the workflow view.
Alternatives to Kit (formerly ConvertKit) and Customer.io
Other Mkt Auto products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Kit (formerly ConvertKit) or Customer.io.
Postiz
Postiz encrypts channel tokens and lets agents send connect links for new channels.
n8n
n8n fixes executions being redacted when they used global credentials, on three lines.
Gumloop
Gumloop 13.6 gives admins one set of rules for every tool an agent touches.
AcyMailing
AcyMailing 11.1.2 closes holes that let strangers read or unsubscribe any subscriber.
Buttondown
Buttondown lets writers reorder editor blocks without a mouse.
See all Kit (formerly ConvertKit) alternatives → · See all Customer.io alternatives →
Recent activity from Kit (formerly ConvertKit) and Customer.io
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 4d agoCustomer.ioQuiet hours hold SMS until recipients' local sending hours
- 5d agoCustomer.ioDesign Studio is now the default email editor
- 5d agoCustomer.ioRun experiments in your automations
- 8d agoCustomer.ioNew click heatmaps show how people engage with your emails
- 8d agoCustomer.ioDynamic senders: automatically use the right SMS sender
- 9d agoCustomer.ioSet language rules for auto-translated messages
- 3mo agoKit (formerly ConvertKit)Subscribers page: New navigation and search
- 3mo agoKit (formerly ConvertKit)Subscriber bulk actions, always in reach
- 3mo agoKit (formerly ConvertKit)Build and edit landing pages with the Kit MCP ⚡
- 3mo agoKit (formerly ConvertKit)Request to connect with other creators in the Creator Network
- 4mo agoKit (formerly ConvertKit)Your favicon, your brand
- 4mo agoKit (formerly ConvertKit)Try the new Kit navigation
Frequently asked questions
What is the difference between Kit (formerly ConvertKit) and Customer.io?
They serve adjacent needs but don't currently overlap on shipped themes. Kit (formerly ConvertKit) is currently shipping more aggressively (velocity 6.3 vs 5.0), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Kit (formerly ConvertKit) better than Customer.io?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Kit (formerly ConvertKit) is currently shipping more aggressively (velocity 6.3 vs 5.0), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Mkt Auto products to evaluate alongside.
What are the best alternatives to Kit (formerly ConvertKit)?
Top Kit (formerly ConvertKit) alternatives in Mkt Auto are ranked by recent ship velocity. Browse the "Kit (formerly ConvertKit) alternatives" section above for the current picks, or visit /alternatives/convertkit for the full list with editorial commentary on each.
What are the best alternatives to Customer.io?
Top Customer.io alternatives in Mkt Auto are ranked by recent ship velocity. Browse the "Customer.io alternatives" section above for the current picks, or visit /alternatives/customer-io for the full list with editorial commentary on each.