Real-time
Two-way sync
Changes in Customer.io or Streak CRM instantly reflect in both systems. No stale data, no manual imports.
Business productivity ⇄ CRM
Customer.io to Streak CRM integration — real-time, two-way sync
Keep Customer.io and Streak CRM 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 Streak CRM
Sync what happens in Customer.io with the customer records in Streak CRM, in real time and in both directions.
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.
Stacksync connects Events, Segments, Campaigns, Broadcasts in Customer.io to Pipelines, Boxes, Stages, Contacts in Streak CRM with bi-directional, real-time sync. Activity and record changes in Customer.io update the matching contact or account in Streak CRM, and CRM data flows the other way wherever Customer.io can store and use it.
Common use cases
- Sync account-level objects and their person relationships for B2B messaging keyed to company attributes.
- Sync product usage and billing attributes from Postgres onto Customer.io people so lifecycle campaigns trigger on real product behavior.
- Sync Streak boxes into Postgres so operations can query pipeline data with SQL and back internal tools
- Push deals and contacts into a warehouse to report on pipeline alongside product and billing data
Where Customer.io runs outreach
Prospects, sends, and replies sync into Streak CRM, keeping lead status current without manual imports.
Where Customer.io supplies contact or company data
Enriched fields land directly on records in Streak CRM, and refreshes keep them from going stale.
Where Customer.io processes payments
Charges, refunds, and subscription changes appear on the account in Streak CRM, so revenue context lives with the relationship.
What you can sync between Customer.io and Streak CRM
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 | Streak CRM objects | |
|---|---|---|
| Events Behavioral events sent via the Track API that trigger campaigns. | Tasks To-dos attached to boxes for follow-up tracking. | |
| Segments Attribute- or event-based groups; data syncs feed the attributes segments evaluate. | Email threads Gmail threads linked to boxes, since the CRM lives inside the inbox. | |
| Campaigns Automated workflows whose membership and metrics can be read via the App API. | Custom fields Per-pipeline field definitions that determine what data a box can hold. | |
| Broadcasts One-off sends to segments or audiences, triggerable via API. | Pipelines Define the process and the custom field schema that boxes in them carry. | |
| Deliveries / Messages Per-recipient message records whose lifecycle events flow out through reporting webhooks. | Boxes The core record (a deal, hire, or project) tracked through pipeline stages. | |
| Newsletters Recurring email sends with performance metrics available for reporting syncs. | Stages Pipeline steps whose transitions are the usual trigger for downstream syncs. |
What ships with Customer.io ⇄ Streak CRM
Connect Customer.io and Streak CRM for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Customer.io–Streak CRM connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Customer.io or Streak CRM 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 Streak CRM record.
Observability
Monitoring
Track your Customer.io ⇄ Streak CRM 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 Streak CRM.
How the Customer.io and Streak CRM 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
Streak CRM
- Integration surface
- REST API
- Authentication
- API key issued per user
- Change detection
- Polling against pipeline, box, and contact endpoints; Streak's automations can send outbound webhooks on higher plans
- Capabilities
- read · write
- Rate limits
- Subject to the platform's API rate limits; quotas are not prominently published
How it works
How to connect Customer.io to Streak CRM — 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 Streak CRM 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
Streak CRM
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Customer.io and Streak CRM 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 ⇄ Streak CRMCustomers 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 Streak CRMCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Customer.io and Streak CRM integration FAQ
-
Yes. Stacksync provides a managed, real-time two-way integration between Customer.io and Streak CRM: authenticate both systems, choose the objects to sync (such as Customer.io's Events and Segments), map fields visually, and changes propagate both ways in milliseconds — no code required.
-
On the Customer.io side: Events, Segments, Campaigns, Broadcasts, plus custom fields where Customer.io exposes them. On the Streak CRM side: Pipelines, Boxes, Stages, Contacts. Stacksync auto-detects both schemas and converts types between the two systems.
-
Yes. Each object mapping can be bidirectional or restricted to a single direction (both systems accept writes). Read-only mirrors, one-way pushes, and full two-way sync can be mixed in the same integration.
-
Common patterns for Customer.io and Streak CRM: Where Customer.io runs outreach; Where Customer.io supplies contact or company data; Where Customer.io processes payments. Prospects, sends, and replies sync into Streak CRM, keeping lead status current without manual imports.
-
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. Streak CRM: REST API. Authentication: API key issued per user. Stacksync manages authentication, retries, and rate limits on both sides.
-
Customer.io: Reporting webhooks emit granular message lifecycle events, which is the practical way to get engagement data out at scale. Streak CRM: Custom fields are defined per pipeline, so two pipelines can have entirely different schemas and sync mappings must be pipeline-aware. Stacksync's field mapping accounts for these differences between Customer.io and Streak CRM without custom code.
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.
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:
Related integrations
Every pair below is a real-time, two-way sync. Search all 386 integrations available for Customer.io and Streak CRM.
Popular · 8 of 386
-
Customer.io ⇄ Clearbit -
Customer.io ⇄ Close -
Customer.io ⇄ Copper CRM -
Customer.io ⇄ Creatio CRM -
Streak CRM ⇄ Microsoft Teams -
Streak CRM ⇄ NextGen Healthcare -
Streak CRM ⇄ Orderful -
Streak CRM ⇄ Resend
No integrations match .
