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CRM ⇄ Business productivity

Clearbit to Customer.io integration — real-time data sync

Keep Clearbit 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
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Migrated from Celigo
Why teams connect Clearbit and Customer.io

Flow Clearbit data into Customer.io in real time — no exports, no schedulers, no custom scripts.

Clearbit 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 Clearbit — without exports, scripts, or schedulers.

The CRM is supposed to be the record of every customer relationship, but customer-relevant information also accumulates in the other tools a team runs. Whatever Customer.io holds or produces that touches a customer, whether conversations, payments, replies, enriched data, or notes, the CRM only benefits if it arrives without someone copying it over.

Common use cases

  • Land delivery and engagement events (sent, opened, clicked, bounced) from reporting webhooks into a warehouse for attribution analysis.
  • Keep unsubscribe and subscription-preference state consistent between Customer.io and the CRM to avoid compliance gaps.
  • Refresh firmographic fields on existing accounts on a schedule so segmentation stays current.
  • Enrich new CRM leads with person and company attributes as they are created, keyed by email and domain.

Where Customer.io handles support or shared inboxes

Tickets and conversations attach to the right contact and account in Clearbit, so sales sees open issues before the next call.

Where Customer.io runs outreach

Prospects, sends, and replies sync into Clearbit, keeping lead status current without manual imports.

Where Customer.io supplies contact or company data

Enriched fields land directly on records in Clearbit, and refreshes keep them from going stale.

What you can sync between Clearbit 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.

Clearbit objects Customer.io objects
Companies Firmographic profiles looked up by domain and merged into account records. Events Behavioral events sent via the Track API that trigger campaigns.
Persons Individual profiles looked up by email and used to enrich contacts and leads. Segments Attribute- or event-based groups; data syncs feed the attributes segments evaluate.
Reveal matches IP-to-company resolutions used to identify anonymous website traffic. Campaigns Automated workflows whose membership and metrics can be read via the App API.
Name-to-domain lookups Company name resolution used to normalize account records before enrichment. Broadcasts One-off sends to segments or audiences, triggerable via API.
Enrichment attributes The firmographic and technographic fields appended to destination records. Deliveries / Messages Per-recipient message records whose lifecycle events flow out through reporting webhooks.
What ships with Clearbit ⇄ Customer.io

Connect Clearbit and Customer.io for flexible, real-time data sync.

Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Clearbit–Customer.io connection.

Real-time

Real-time sync

Changes in Clearbit or Customer.io instantly reflect in both systems. No stale data, no manual imports.

No-code + pro-code

Workflow automation

Trigger automated workflows whenever Clearbit 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 Clearbit or Customer.io record.

Observability

Monitoring

Track your Clearbit ⇄ 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 Clearbit and Customer.io.

How the Clearbit and Customer.io connectors work

Clearbit

Integration surface
REST API (separate endpoints per product: Enrichment, Reveal)
Authentication
API key (bearer secret key)
Change detection
On-demand lookups; asynchronous enrichment results can be delivered via webhook callbacks
Capabilities
read · webhooks
Rate limits
Subject to plan-based API rate limits and lookup volumes

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 Clearbit 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.

  1. 01

    Connect your apps

    Authenticate Clearbit 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.

    • OAuth 2.0
    • SSH tunnel
    • VPC peering
    Clearbit connected
    Customer.io connected
    OAuth 2.0
    SSH tunnel
    SSL certificate
    VPC peering
  2. 02

    Choose tables

    Pick the Clearbit 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.

    • Standard objects
    • Custom objects
    • Auto-schema
    objects · Clearbit ⇄ Customer.io
    Customers 12,480
    Sales Orders 8,213
    Invoices 5,902
    Items 1,344
  3. 03

    Map fields

    Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.

    • Auto-map
    • Type casting
    • Transforms
    Clearbit Customer.io
    Company company_name text
    Email email text
    Amount amount numeric
    Created created_at timestamp
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FAQ

Clearbit and Customer.io integration FAQ

SECURITY

Security teams love 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.

Learn more about security
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:

OAuth 2 SSH Tunnelling SSL certificates IP Whitelisting VPN gateway VPC peering and more

Related integrations

Every pair below is a real-time, two-way sync. Search all 386 integrations available for Clearbit and Customer.io.

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