Real-time
Two-way sync
Changes in Customer.io or Snapfulfil instantly reflect in both systems. No stale data, no manual imports.
Business productivity ⇄ ERP
Customer.io to Snapfulfil integration — real-time, two-way sync
Keep Customer.io and Snapfulfil 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 Snapfulfil
Bridge the tools people work in and the system the business runs on: real-time, two-way sync between Customer.io and Snapfulfil.
The ERP holds the records the business is run on, and it is rarely where day-to-day work happens. Customer.io is closer to the work, and the two often need the same facts about the same people, organizations, and transactions. Bridging them by hand, or by nightly file transfer, leaves each side out of date for hours at a time.
Stacksync syncs Broadcasts, Deliveries / Messages, Newsletters, People in Customer.io with Purchase orders / ASNs, Items (SKUs), Inventory balances, Shipments in Snapfulfil bi-directionally and in real time, with field-level mapping and rules for which system wins on conflict. Changes made where the work happens reach the system of record within seconds, and the reverse.
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.
- Mirror fulfillment activity into a database for operational reporting outside the WMS
- Push sales orders from an ERP or e-commerce platform into Snapfulfil for fulfillment without file drops
Master data corrections travel
A customer, supplier, or contact detail corrected in either system updates the other, ending duplicate maintenance.
Where Customer.io faces customers and Snapfulfil carries account records
Order, invoice, or account status from Snapfulfil appears alongside the customer in Customer.io, so front-line teams answer from live data.
Where Customer.io collects payments: transactions post through
Payment events sync into Snapfulfil as they occur, keeping the enterprise records current without manual entry.
What you can sync between Customer.io and Snapfulfil
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 | Snapfulfil objects | |
|---|---|---|
| Objects Non-person entities such as accounts or companies, related to people for account-level messaging. | Purchase orders / ASNs Inbound expectations that drive receiving and putaway. | |
| Events Behavioral events sent via the Track API that trigger campaigns. | Items (SKUs) The item master, usually sourced from the ERP or storefront. | |
| Segments Attribute- or event-based groups; data syncs feed the attributes segments evaluate. | Inventory balances On-hand and allocated stock, read back to keep the ERP and selling channels accurate. | |
| Campaigns Automated workflows whose membership and metrics can be read via the App API. | Shipments Dispatch confirmations with carrier and tracking details returned to the order source. | |
| Broadcasts One-off sends to segments or audiences, triggerable via API. | Warehouse locations Bin and zone structure referenced by stock and movement records. | |
| Deliveries / Messages Per-recipient message records whose lifecycle events flow out through reporting webhooks. | Returns Inbound customer returns processed back into stock or quarantine. |
What ships with Customer.io ⇄ Snapfulfil
Connect Customer.io and Snapfulfil for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Customer.io–Snapfulfil connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Customer.io or Snapfulfil 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 Snapfulfil record.
Observability
Monitoring
Track your Customer.io ⇄ Snapfulfil 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 Snapfulfil.
How the Customer.io and Snapfulfil 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
Snapfulfil
- Integration surface
- REST-style web service API
- Authentication
- API credentials issued for the warehouse instance
- Change detection
- Polling, subject to the platform's API rate limits
- Capabilities
- read · write
- Rate limits
- Specific quotas are not publicly standardized; treat throughput as instance-dependent
How it works
How to connect Customer.io to Snapfulfil — 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 Snapfulfil 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
Snapfulfil
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Customer.io and Snapfulfil 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 ⇄ SnapfulfilCustomers 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 SnapfulfilCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Customer.io and Snapfulfil integration FAQ
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Yes. Stacksync provides a managed, real-time two-way integration between Customer.io and Snapfulfil: authenticate both systems, choose the objects to sync (such as Customer.io's Objects and Events), map fields visually, and changes propagate both ways in milliseconds — no code required.
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Customer.io: Beyond people, Customer.io supports non-person objects (for example accounts) with typed relationships to people, enabling account-based messaging logic. Snapfulfil: Snapfulfil is a cloud WMS operated by Synergy Logistics, delivered as a hosted service rather than on-premise software. Stacksync's field mapping accounts for these differences between Customer.io and Snapfulfil 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 Snapfulfil 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 Snapfulfil connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Customer.io–Snapfulfil integration in-house.
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Yes — Stacksync ships production-grade connectors for both Customer.io and Snapfulfil. 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 Snapfulfil: Polling, subject to the platform's API rate limits. Each detected change propagates to the other side in milliseconds, with field-level conflict resolution and an inspectable event log.
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 Snapfulfil.
Popular · 8 of 386
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Customer.io ⇄ Microsoft Dynamics NAV -
Customer.io ⇄ Plex ERP -
Customer.io ⇄ QAD ERP -
Customer.io ⇄ Rootstock ERP -
Snapfulfil ⇄ ConnectWise -
Snapfulfil ⇄ Aviato -
Snapfulfil ⇄ eClinicalWorks -
Snapfulfil ⇄ Full Enrich
No integrations match .
