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Business productivity ⇄ CRM

Customer.io to Vtiger CRM integration — real-time, two-way sync

Keep Customer.io and Vtiger 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

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Why teams connect Customer.io and Vtiger CRM

Sync what happens in Customer.io with the customer records in Vtiger 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 Objects, Events, Segments, Campaigns in Customer.io to Products, Quotes, Sales Orders, Invoices in Vtiger CRM with bi-directional, real-time sync. Activity and record changes in Customer.io update the matching contact or account in Vtiger CRM, and CRM data flows the other way wherever Customer.io can store and use it.

Common use cases

  • Sync product usage and billing attributes from Postgres onto Customer.io people so lifecycle campaigns trigger on real product behavior.
  • Push CRM segments and lead status into Customer.io so messaging respects sales stage.
  • Two-way contact and organization sync between Vtiger and a billing or ERP system.
  • Sync Cases to an external help desk or engineering tracker so support and product teams work from the same tickets.

Where Customer.io supplies contact or company data

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

Where Customer.io processes payments

Charges, refunds, and subscription changes appear on the account in Vtiger CRM, so revenue context lives with the relationship.

Where Customer.io can store CRM context: fields kept current

Owner, lifecycle stage, or account details from Vtiger CRM sync into Customer.io, so people working there have the context without switching tools.

What you can sync between Customer.io and Vtiger 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 Vtiger CRM objects
Events Behavioral events sent via the Track API that trigger campaigns. Opportunities Deal records, historically the Potentials module, synced for pipeline reporting.
Segments Attribute- or event-based groups; data syncs feed the attributes segments evaluate. Cases Support tickets from the help-desk module, mirrored to external trackers.
Campaigns Automated workflows whose membership and metrics can be read via the App API. Products Catalog items referenced on quotes, orders, and invoices.
Broadcasts One-off sends to segments or audiences, triggerable via API. Quotes Pricing documents with line items.
Deliveries / Messages Per-recipient message records whose lifecycle events flow out through reporting webhooks. Sales Orders Order records between quote and invoice, synced to fulfillment systems.
Newsletters Recurring email sends with performance metrics available for reporting syncs. Invoices Billing documents pushed into accounting software.
What ships with Customer.io ⇄ Vtiger CRM

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

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

Real-time

Two-way sync

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

No-code + pro-code

Workflow automation

Trigger automated workflows whenever Customer.io or Vtiger 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 Vtiger CRM record.

Observability

Monitoring

Track your Customer.io ⇄ Vtiger 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 Vtiger CRM.

How the Customer.io and Vtiger 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

Vtiger CRM

Integration surface
REST API
Authentication
HTTP Basic with username and access key
Change detection
Polling on record modified timestamps; workflows can fire outbound HTTP calls on record events
Capabilities
read · write · webhooks
Rate limits
Subject to the platform's API rate limits, which vary by edition.
How it works

How to connect Customer.io to Vtiger 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.

  1. 01

    Connect your apps

    Authenticate Customer.io and Vtiger CRM 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
    Customer.io connected
    Vtiger CRM connected
    OAuth 2.0
    SSH tunnel
    SSL certificate
    VPC peering
  2. 02

    Choose tables

    Pick the Customer.io and Vtiger 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.

    • Standard objects
    • Custom objects
    • Auto-schema
    objects · Customer.io ⇄ Vtiger CRM
    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
    Customer.io Vtiger CRM
    Company company_name text
    Email email text
    Amount amount numeric
    Created created_at timestamp
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FAQ

Customer.io and Vtiger CRM 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 Customer.io and Vtiger CRM.

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