Real-time
Real-time sync
Changes in BetterContact or Customer.io instantly reflect in both systems. No stale data, no manual imports.
Business productivity
BetterContact to Customer.io integration — real-time data sync
Keep BetterContact and Customer.io 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
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Migrated from Celigo
Migrated from Heroku Connect
Migrated from Matillion
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Migrated from Fivetran
Case study
Migrated from Celigo
Why teams connect BetterContact and Customer.io
Flow BetterContact data into Customer.io in real time — no exports, no schedulers, no custom scripts.
BetterContact is a read-only source: Stacksync reads its data in real time and delivers it into Customer.io, so Customer.io always reflects the current state of BetterContact — without exports, scripts, or schedulers.
Two tools in the daily stack often hold overlapping information: the same people, the same companies, or the same pieces of work, described twice. The tools do different jobs, so consolidating is not the answer; the overlap just needs to stop drifting.
Stacksync syncs Enrichment Request, Enriched Contact, Company, Lead Finder Search in BetterContact with Objects, Events, Segments, Campaigns in Customer.io in real time. You choose which records overlap, map the fields that should match, and pick a direction or let changes flow both ways. From then on, an update made in either tool is reflected in the other within seconds, without exports or copy-paste.
Because the sync is field-level, each tool keeps its own extras; only the shared data is held in agreement.
Common use cases
- 01 Enrich new CRM leads with verified emails and mobile numbers as they are created, writing results back to the CRM record.
- 02 Backfill a warehouse of contacts with waterfall enrichment across 20+ data providers.
- 03 Sync account-level objects and their person relationships for B2B messaging keyed to company attributes.
- 04 Sync product usage and billing attributes from Postgres onto Customer.io people so lifecycle campaigns trigger on real product behavior.
Common sync patterns
Where both tools track people or companies: one consistent record
Contact and company details corrected in either tool update the other, so nobody works from the old version.
Where one tool produces events: mirror them in the other
Payments, replies, messages, or tickets created in one tool can create or update matching records in the other, keeping context in one place.
Where Customer.io is where the team documents or plans: keep its data fed
Information that originates in BetterContact stays current in Customer.io instead of going stale after a one-time paste.
What you can sync between BetterContact and Customer.io
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.
| BetterContact objects | Customer.io objects | How this pairing syncs | |
|---|---|---|---|
| Enrichment Request Batch or single submissions of up to 100 contacts per request for waterfall enrichment. | People Profiles with attributes, matched on identifiers like id or email; the main write target of data syncs. | Enrichment Request is specific to BetterContact and People to Customer.io — each maps to any object or custom field on the other side. | |
| Enriched Contact Verified work emails and mobile numbers with job title, LinkedIn profile, location, and skills. | Objects Non-person entities such as accounts or companies, related to people for account-level messaging. | Enriched Contact is specific to BetterContact and Objects to Customer.io — each maps to any object or custom field on the other side. | |
| Company Company data returned with each contact: name, domain, HQ location, industry, employee count. | Events Behavioral events sent via the Track API that trigger campaigns. | Company is specific to BetterContact and Events to Customer.io — each maps to any object or custom field on the other side. | |
| Lead Finder Search Prospect discovery by people and company filters, returning enriched lead profiles. | Segments Attribute- or event-based groups; data syncs feed the attributes segments evaluate. | Lead Finder Search is specific to BetterContact and Segments to Customer.io — each maps to any object or custom field on the other side. |
How changes propagate between BetterContact and Customer.io
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.
BetterContact Customer.io Sub-second propagation
DetectionBetterContact notifies Stacksync of record changes through webhook events. Job-based delivery — enrichment results arrive by webhook push or polling of the results endpoint.
DeliveryEach detected change is written to Customer.io through its API, with automatic retries and rate-limit backoff.
Customer.io BetterContact Sub-second propagation
DetectionCustomer.io notifies Stacksync of record changes through webhook events. Reporting webhooks push message and delivery events.
DeliveryBetterContact does not accept inbound record writes, so this direction carries requests rather than records: BetterContact's output flows back as field updates on the originating Customer.io records.
Rate-limit considerations
- BetterContact: Batches capped at 100 contacts per enrichment request.
- Customer.io: Subject to per-API rate limits documented by Customer.io.
What ships with BetterContact ⇄ Customer.io
Connect BetterContact and Customer.io for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every BetterContact–Customer.io connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever BetterContact or Customer.io 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 BetterContact or Customer.io record.
Observability
Monitoring
Track your BetterContact ⇄ Customer.io sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between BetterContact and Customer.io.
How the BetterContact and Customer.io connectors work
BetterContact
- Integration surface
- Asynchronous REST API: submit contacts, then receive results via webhook or fetch them from a results endpoint
- Authentication
- API key
- Change detection
- Job-based delivery — enrichment results arrive by webhook push or polling of the results endpoint; there is no persistent record store to watch
- Capabilities
- read · webhooks
- Rate limits
- Batches capped at 100 contacts per enrichment request.
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
How it works
How to connect BetterContact to Customer.io — 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 BetterContact and Customer.io with each platform's native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.
BetterContact
connected
Customer.io
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the BetterContact and Customer.io 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 · BetterContact ⇄ Customer.ioCustomers 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.
BetterContact Customer.ioCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
BetterContact and Customer.io integration FAQ
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Yes. Stacksync provides a managed, real-time integration between BetterContact and Customer.io — BetterContact is a read-only source, so data flows from it into the other system: authenticate both systems, choose the objects to sync, map fields visually, and changes propagate in milliseconds — no code required.
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Stacksync pricing is usage-based and starts at $1,000/month, including the managed BetterContact and Customer.io connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom BetterContact–Customer.io integration in-house.
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Yes — Stacksync ships production-grade connectors for both BetterContact and Customer.io. The connectors handle authentication, schema detection, rate limits, and retries; you configure the sync, and Stacksync operates it.
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Change detection on BetterContact: Job-based delivery — enrichment results arrive by webhook push or polling of the results endpoint; there is no persistent record store to watch. On Customer.io: Reporting webhooks push message and delivery events; person attribute changes are not streamed and require source-side detection. Each detected change propagates to the other side in milliseconds, with field-level conflict resolution and an inspectable event log.
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On the BetterContact side: Enrichment Request, Enriched Contact, Company, Lead Finder Search, plus custom fields where BetterContact exposes them. On the Customer.io side: Objects, Events, Segments, Campaigns. Stacksync auto-detects both schemas and converts types between the two systems.
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BetterContact is a read-only source, so this integration runs one-way: Stacksync reads from BetterContact in real time and delivers into Customer.io. Field mapping and monitoring work the same as for two-way pairs.
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
CSA STAR
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:
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