Real-time
Two-way sync
Changes in Customer.io or Stripe instantly reflect in both systems. No stale data, no manual imports.
Business productivity ⇄ Accounting and finance
Customer.io to Stripe integration — real-time, two-way sync
Keep Customer.io and Stripe in sync without custom scripts. Cut weeks of integration work, eliminate silent data drift, and give your team a single, reliable source of truth.
- SOC 2 and 6 other compliance frameworks
- POC with real engineers in minutes
Adopted by fast-scaling companies moving mission-critical data in real time
Case study
Migrated from MuleSoft
Case study
Migrated from Celigo
Migrated from Heroku Connect
Migrated from Matillion
Case study
Migrated from Fivetran
Case study
Migrated from Celigo
Why teams connect Customer.io and Stripe
Connect the financial records in Stripe with the work happening in Customer.io, so both stay current without exports or copy-paste.
Stripe holds the financial truth: who the customers are, what they were billed, what they paid. Customer.io is where part of the day-to-day work happens, and that work often involves the same customers and transactions. Without a live connection, the two drift apart, and people end up answering questions from stale copies.
Stacksync keeps Disputes, Payouts, Balance Transactions, Events in Stripe and Campaigns, Broadcasts, Deliveries / Messages, Newsletters in Customer.io in sync, bi-directionally and in real time. Whatever records Customer.io keeps and whatever events it produces, the overlap with Stripe is mapped field by field, and a change on either side shows up on the other within seconds.
There is no middleware to build, no API rate limits to babysit, and no nightly job that leaves the morning running on yesterday's data.
Common use cases
- 01 Reconcile invoices, payouts, and balance transactions into a warehouse or ERP for month-end close
- 02 Keep the product and price catalog aligned between Stripe and an internal database that other systems read
- 03 Keep unsubscribe and subscription-preference state consistent between Customer.io and the CRM to avoid compliance gaps.
- 04 Sync account-level objects and their person relationships for B2B messaging keyed to company attributes.
Common sync patterns
Where Customer.io tracks people or companies: one identity
A customer's details updated in either system update the other, so finance and the rest of the business stop maintaining two versions of the same customer.
Where Customer.io handles customer conversations: billing context in view
Front-line teams see invoice and payment status from Stripe next to the customer they are helping, without logging into the finance system.
Where Customer.io collects payments or triggers charges: events land in Stripe
Payment and charge activity flows into Stripe as it happens, so the books reflect reality without manual reconciliation.
What you can sync between Customer.io and Stripe
Representative objects on each side — any object or custom field can map to any target. Schemas are auto-detected; types are converted between the two systems.
| Customer.io objects | Stripe objects | How this pairing syncs | |
|---|---|---|---|
| Events Behavioral events sent via the Track API that trigger campaigns. | Events The change log; each state change is an Event retrievable via the API. | Same entity on both sides — records pair one-to-one and field-level changes reconcile in both directions. | |
| Newsletters Recurring email sends with performance metrics available for reporting syncs. | Disputes Chargebacks that support and finance teams track in their own tools. | Newsletters is specific to Customer.io and Disputes to Stripe — each maps to any object or custom field on the other side. | |
| People Profiles with attributes, matched on identifiers like id or email; the main write target of data syncs. | Payouts Bank transfers reconciled against balance transactions during close. | People is specific to Customer.io and Payouts to Stripe — each maps to any object or custom field on the other side. | |
| Objects Non-person entities such as accounts or companies, related to people for account-level messaging. | Balance Transactions The ledger entries behind every money movement, the basis for reconciliation. | Objects is specific to Customer.io and Balance Transactions to Stripe — each maps to any object or custom field on the other side. | |
| Segments Attribute- or event-based groups; data syncs feed the attributes segments evaluate. | Customers The billing identity most teams match against CRM accounts and contacts. | Segments is specific to Customer.io and Customers to Stripe — each maps to any object or custom field on the other side. | |
| Campaigns Automated workflows whose membership and metrics can be read via the App API. | PaymentIntents The lifecycle record of a payment attempt, from creation to success or failure. | Campaigns is specific to Customer.io and PaymentIntents to Stripe — each maps to any object or custom field on the other side. |
How changes propagate between Customer.io and Stripe
Each direction of the sync is driven by what the source system can signal and what the destination accepts — detection, delivery, and expected latency below.
Customer.io Stripe Sub-second propagation
DetectionCustomer.io notifies Stacksync of record changes through webhook events. Reporting webhooks push message and delivery events.
DeliveryEach detected change is written to Stripe through its API, with automatic retries and rate-limit backoff.
Stripe Customer.io Sub-second propagation
DetectionStripe notifies Stacksync of record changes through webhook events. Webhooks backed by the Events API.
DeliveryEach detected change is written to Customer.io through its API, with automatic retries and rate-limit backoff.
Rate-limit considerations
- Customer.io: Subject to per-API rate limits documented by Customer.io.
- Stripe: Subject to documented per-mode request rate limits; idempotency keys make retries safe.
What ships with Customer.io ⇄ Stripe
Connect Customer.io and Stripe for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Customer.io–Stripe connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Customer.io or Stripe data changes, update records, fire webhooks, or kick off sequences without brittle API scripts.
At scale
Event queues
Handle millions of events per minute without losing a single Customer.io or Stripe record.
Observability
Monitoring
Track your Customer.io ⇄ Stripe sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Customer.io and Stripe.
How the Customer.io and Stripe connectors work
Customer.io
- Integration surface
- REST APIs split by purpose: Track API for data ingestion, App API for campaigns, people lookups, and messages
- Authentication
- Basic auth with site ID and API key for the Track API; bearer token for the App API
- Change detection
- Reporting webhooks push message and delivery events; person attribute changes are not streamed and require source-side detection
- Capabilities
- read · write · webhooks
- Rate limits
- Subject to per-API rate limits documented by Customer.io
Stripe
- Integration surface
- REST API
- Authentication
- API keys (secret and restricted keys); OAuth 2.0 for Stripe Connect platforms
- Change detection
- Webhooks backed by the Events API; /v1/events supports replay and backfill
- Capabilities
- read · write · webhooks
- Rate limits
- Subject to documented per-mode request rate limits; idempotency keys make retries safe
How it works
How to connect Customer.io to Stripe — three steps, no code
Configure and sync within minutes, no code. Whether you sync 50k or 100M+ records, Stacksync handles the queues, infra, and plumbing. Integrations are non-invasive and need zero setup on your systems.
- 01
Connect your apps
Authenticate Customer.io and Stripe with each platform's native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.
Customer.io
connected
Stripe
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Customer.io and Stripe objects to sync — Stacksync auto-detects both schemas, including custom fields where the platform exposes them. Sync to existing tables, or let Stacksync create new ones with ideal data types.
objects · Customer.io ⇄ StripeCustomers 12,480Sales Orders 8,213Invoices 5,902Items 1,344 - 03
Map fields
Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.
Customer.io StripeCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Customer.io and Stripe integration FAQ
-
Yes. Stacksync provides a managed, real-time two-way integration between Customer.io and Stripe: authenticate both systems, choose the objects to sync (such as Customer.io's Events and Newsletters), map fields visually, and changes propagate both ways in milliseconds — no code required.
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Common patterns for Customer.io and Stripe: Where Customer.io tracks people or companies: one identity; Where Customer.io handles customer conversations: billing context in view; Where Customer.io collects payments or triggers charges: events land in Stripe. A customer's details updated in either system update the other, so finance and the rest of the business stop maintaining two versions of the same customer.
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Customer.io: REST APIs split by purpose: Track API for data ingestion, App API for campaigns, people lookups, and messages. Authentication: Basic auth with site ID and API key for the Track API; bearer token for the App API. Stripe: REST API. Authentication: API keys (secret and restricted keys); OAuth 2.0 for Stripe Connect platforms. Stacksync manages authentication, retries, and rate limits on both sides.
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Stripe: Related records can be expanded inline with the expand parameter, cutting the number of requests a sync needs. Customer.io: Reporting webhooks emit granular message lifecycle events, which is the practical way to get engagement data out at scale. Stacksync's field mapping accounts for these differences between Customer.io and Stripe without custom code.
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Stacksync is SOC 2 Type II and ISO 27001 certified with HIPAA BAA support. Data is encrypted in transit, and a zero-persistent-storage architecture means Customer.io and Stripe records are not retained after a sync operation.
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Stacksync pricing is usage-based and starts at $1,000/month, including the managed Customer.io and Stripe connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Customer.io–Stripe integration in-house.
SECURITY
Security teams trust Stacksync
As a data company, we understand the importance of keeping your data secure. Stacksync is built with security best practices to keep your data safe at every layer, and is DPF-certified for US, EU, UK and CH data transfers.
SOC 2 Type II
ISO 27001
HIPAA BAA
GDPR
CCPA
DPF US-EU-UK-CH
→ SECURITY WITH BENEFITS
SSO & SCIM
Let your users access Stacksync from your centralized user management systems. Works with Okta, Azure, Google SSO and more.
Alerts
Immediately get alerted about record syncing issues over email, Slack, PagerDuty and WhatsApp. Resolve issues from a centralized dashboard with retry and revert options.
Secure connection options
Securely connects to your systems with:
Related integrations
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