Real-time
Two-way sync
Changes in Customer.io or Postgres Heroku instantly reflect in both systems. No stale data, no manual imports.
Business productivity ⇄ Database
Customer.io to Postgres Heroku integration — real-time, two-way sync
Keep Customer.io and Postgres Heroku 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 Postgres Heroku
Mirror Customer.io's data into Postgres Heroku so your own code can read and write it like any other table, with changes flowing both ways in seconds.
Engineers integrate with tools like Customer.io through APIs, which means auth, pagination, rate limits, webhooks, and retry logic, all maintained forever and all different for every tool. Meanwhile the data would be trivial to use if it simply lived in Postgres Heroku.
Stacksync mirrors Segments, Campaigns, Broadcasts, Deliveries / Messages from Customer.io into Schemas, Primary and Unique Keys, JSONB Columns, Sequences in Postgres Heroku and keeps both sides in sync in real time. Your services query the database directly, and inserts or updates your code makes flow back into Customer.io, so the tool and the database never disagree.
Common use cases
- Push CRM segments and lead status into Customer.io so messaging respects sales stage.
- Land delivery and engagement events (sent, opened, clicked, bounced) from reporting webhooks into a warehouse for attribution analysis.
- Keep several Heroku app databases aligned with one system of record
- Reflect billing and subscription records into the app database so product logic reads local rows
Automate Customer.io from your codebase
Write to the synced tables in Postgres Heroku and Stacksync propagates the change into Customer.io, replacing custom integration code.
React to changes as they happen
Updates in Customer.io arrive as row changes in Postgres Heroku, so triggers, jobs, and services can respond in near real time.
One integration pattern for the whole stack
Every synced tool looks the same from the database, so each new integration is configuration, not a new codebase.
What you can sync between Customer.io and Postgres Heroku
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 | Postgres Heroku objects | |
|---|---|---|
| Events Behavioral events sent via the Track API that trigger campaigns. | Views Read-side projections exposed to outbound syncs. | |
| Segments Attribute- or event-based groups; data syncs feed the attributes segments evaluate. | Materialized Views Precomputed result sets synced outward on refresh. | |
| Campaigns Automated workflows whose membership and metrics can be read via the App API. | Schemas Namespaces that scope which tables a sync reads and writes. | |
| Broadcasts One-off sends to segments or audiences, triggerable via API. | Primary and Unique Keys Match keys for idempotent upserts from connected systems. | |
| Deliveries / Messages Per-recipient message records whose lifecycle events flow out through reporting webhooks. | JSONB Columns Semi-structured payloads for nested SaaS objects and metadata. | |
| Newsletters Recurring email sends with performance metrics available for reporting syncs. | Sequences Generate surrogate keys for rows created by inbound syncs. |
What ships with Customer.io ⇄ Postgres Heroku
Connect Customer.io and Postgres Heroku for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Customer.io–Postgres Heroku connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Customer.io or Postgres Heroku 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 Postgres Heroku record.
Observability
Monitoring
Track your Customer.io ⇄ Postgres Heroku 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 Postgres Heroku.
How the Customer.io and Postgres Heroku 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
Postgres Heroku
- Integration surface
- SQL wire protocol (standard PostgreSQL)
- Authentication
- Database credentials from the Heroku DATABASE_URL config var; SSL required
- Change detection
- Trigger-based capture or polling in most configurations; log-based logical replication availability depends on plan and Heroku's managed server settings
- Capabilities
- read · write
- Rate limits
- No API rate limits; connection counts and performance are bounded by the Heroku Postgres plan
How it works
How to connect Customer.io to Postgres Heroku — 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 Postgres Heroku 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
Postgres Heroku
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Customer.io and Postgres Heroku 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 ⇄ Postgres HerokuCustomers 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 Postgres HerokuCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Customer.io and Postgres Heroku integration FAQ
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Yes. Stacksync provides a managed, real-time two-way integration between Customer.io and Postgres Heroku: 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.
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Common patterns for Customer.io and Postgres Heroku: Automate Customer.io from your codebase; React to changes as they happen; One integration pattern for the whole stack. Write to the synced tables in Postgres Heroku and Stacksync propagates the change into Customer.io, replacing custom integration code.
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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. Postgres Heroku: SQL wire protocol (standard PostgreSQL). Authentication: Database credentials from the Heroku DATABASE_URL config var; SSL required. Stacksync manages authentication, retries, and rate limits on both sides.
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Customer.io: Reporting webhooks emit granular message lifecycle events, which is the practical way to get engagement data out at scale. Postgres Heroku: Credentials are managed by Heroku through the DATABASE_URL config var and can rotate, so integrations should tolerate credential changes. Stacksync's field mapping accounts for these differences between Customer.io and Postgres Heroku 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 Postgres Heroku 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 Postgres Heroku connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Customer.io–Postgres Heroku integration in-house.
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 Postgres Heroku.
Popular · 8 of 386
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Customer.io ⇄ AWS Aurora MySQL - Customer.io ⇄ AWS Aurora PostgreSQL
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Customer.io ⇄ MongoDB -
Customer.io ⇄ CockroachDB -
Postgres Heroku ⇄ Lemlist -
Postgres Heroku ⇄ Lusha -
Postgres Heroku ⇄ Microsoft 365 -
Postgres Heroku ⇄ Microsoft Dynamics 365
No integrations match .
