Real-time
Real-time sync
Changes in Customer.io or Lusha instantly reflect in both systems. No stale data, no manual imports.
Business productivity
Customer.io to Lusha integration — real-time data sync
Keep Customer.io and Lusha 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 Lusha
Flow Lusha data into Customer.io in real time — no exports, no schedulers, no custom scripts.
Lusha 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 Lusha — 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 Deliveries / Messages, Newsletters, People, Objects in Customer.io with Person Profiles, Company Profiles, Email Addresses, Phone Numbers in Lusha 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
- Keep unsubscribe and subscription-preference state consistent between Customer.io and the CRM to avoid compliance gaps.
- Sync account-level objects and their person relationships for B2B messaging keyed to company attributes.
- Backfill missing phone numbers on an existing contact list stored in a database or warehouse.
- Append firmographic company data to account records before territory or scoring runs.
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 Lusha is where the team documents or plans: keep its data fed
Information that originates in Customer.io stays current in Lusha instead of going stale after a one-time paste.
What you can sync between Customer.io and Lusha
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 | Lusha objects | |
|---|---|---|
| Campaigns Automated workflows whose membership and metrics can be read via the App API. | Person Profiles Contact-level enrichment results (work emails, phone numbers, title, company) returned per lookup. | |
| Broadcasts One-off sends to segments or audiences, triggerable via API. | Company Profiles Firmographic records (industry, size, location) appended to account or company rows. | |
| Deliveries / Messages Per-recipient message records whose lifecycle events flow out through reporting webhooks. | Email Addresses Work emails written into CRM contact fields during enrichment. | |
| Newsletters Recurring email sends with performance metrics available for reporting syncs. | Phone Numbers Direct-dial and mobile numbers appended for outbound calling workflows. | |
| People Profiles with attributes, matched on identifiers like id or email; the main write target of data syncs. | Prospecting Results Search-based lists of people and companies matching filters, used to seed lead lists. | |
| Objects Non-person entities such as accounts or companies, related to people for account-level messaging. | Bulk Enrichment Requests Batch lookups that enrich multiple records per request, used to backfill large contact lists rather than one-off calls. |
What ships with Customer.io ⇄ Lusha
Connect Customer.io and Lusha for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Customer.io–Lusha connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Customer.io or Lusha 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 Lusha record.
Observability
Monitoring
Track your Customer.io ⇄ Lusha 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 Lusha.
How the Customer.io and Lusha 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
Lusha
- Integration surface
- REST API
- Authentication
- API key
- Change detection
- Not event-driven; data is fetched on demand per lookup, so syncs poll or trigger enrichment when source records change
- Capabilities
- read
- Rate limits
- Lookups consume credits and are subject to the platform's API rate limits.
How it works
How to connect Customer.io to Lusha — 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 Lusha 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
Lusha
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Customer.io and Lusha 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 ⇄ LushaCustomers 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 LushaCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Customer.io and Lusha integration FAQ
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Yes. Stacksync provides a managed, real-time integration between Customer.io and Lusha — Lusha 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 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 Lusha 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 Lusha connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Customer.io–Lusha integration in-house.
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Yes — Stacksync ships production-grade connectors for both Customer.io and Lusha. 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 Customer.io: Reporting webhooks push message and delivery events; person attribute changes are not streamed and require source-side detection. On Lusha: Not event-driven; data is fetched on demand per lookup, so syncs poll or trigger enrichment when source records change. 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 Customer.io side: Deliveries / Messages, Newsletters, People, Objects, plus custom fields where Customer.io exposes them. On the Lusha side: Person Profiles, Company Profiles, Email Addresses, Phone Numbers. Stacksync auto-detects both schemas and converts types between the two systems.
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 Lusha.
Popular · 8 of 386
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Customer.io ⇄ GitHub -
Customer.io ⇄ Atlassian -
Customer.io ⇄ Braze -
Customer.io ⇄ ConnectWise -
Lusha ⇄ Campfire -
Lusha ⇄ Front -
Lusha ⇄ Amazon Seller Central -
Lusha ⇄ SendGrid
No integrations match .
