Real-time
Two-way sync
Changes in Klaviyo or Snapfulfil instantly reflect in both systems. No stale data, no manual imports.
Business productivity ⇄ ERP
Klaviyo to Snapfulfil integration — real-time, two-way sync
Keep Klaviyo 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 Klaviyo and Snapfulfil
Bridge the tools people work in and the system the business runs on: real-time, two-way sync between Klaviyo and Snapfulfil.
The ERP holds the records the business is run on, and it is rarely where day-to-day work happens. Klaviyo 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 Bridging them by hand, or by nightly file transfer, leaves each side out of date for hours at a time.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 Campaigns, Flows, Templates, Catalog Items in Klaviyo with Returns, Sales orders, Purchase orders / ASNs, Items (SKUs) 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
- Mirror campaign and flow engagement events into a warehouse for revenue attribution alongside order data
- Keep suppression and consent status consistent between Klaviyo and other email or SMS tools
- Sync shipment confirmations and tracking numbers back to the order management system as orders dispatch
- Keep inventory balances aligned between the WMS, the ERP, and selling channels to prevent oversells
Where Klaviyo faces customers and Snapfulfil carries account records
Order, invoice, or account status from Snapfulfil appears alongside the customer in Klaviyo, so front-line teams answer from live data.
Where Klaviyo collects payments: transactions post through
Payment events sync into Snapfulfil as they occur, keeping the enterprise records current without manual entry.
Where Snapfulfil is the HR or people system of record
Worker and organization data from Snapfulfil stays current in Klaviyo, so the tools people use daily reflect the org as it actually is.
What you can sync between Klaviyo 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.
| Klaviyo objects | Snapfulfil objects | |
|---|---|---|
| Profiles Person records with arbitrary custom properties are the target for CRM and warehouse-sourced attributes. | Returns Inbound customer returns processed back into stock or quarantine. | |
| Lists Static audience memberships sync in from CRMs and forms for targeting. | Sales orders Orders pushed into the WMS for picking, packing, and dispatch. | |
| Segments Dynamic audiences are readable so other tools can mirror who qualifies. | Purchase orders / ASNs Inbound expectations that drive receiving and putaway. | |
| Events Timestamped behavioral records tied to metrics; external order and product events are pushed in to trigger flows. | Items (SKUs) The item master, usually sourced from the ERP or storefront. | |
| Metrics Event type definitions organize the activity stream used in segmentation and attribution. | Inventory balances On-hand and allocated stock, read back to keep the ERP and selling channels accurate. | |
| Campaigns Email and SMS sends expose performance data for warehouse-based reporting. | Shipments Dispatch confirmations with carrier and tracking details returned to the order source. |
What ships with Klaviyo ⇄ Snapfulfil
Connect Klaviyo and Snapfulfil for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Klaviyo–Snapfulfil connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Klaviyo 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 Klaviyo or Snapfulfil record.
Observability
Monitoring
Track your Klaviyo ⇄ Snapfulfil sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Klaviyo and Snapfulfil.
How the Klaviyo and Snapfulfil connectors work
Klaviyo
- Integration surface
- REST API compliant with the JSON:API specification
- Authentication
- OAuth 2.0 for apps or private API keys
- Change detection
- Polling on updated timestamps; outbound webhooks exist for event topics (availability depends on plan or app-partner status) and as flow webhook actions
- Capabilities
- read · write · webhooks
- Rate limits
- Per-endpoint burst and steady rate limits apply
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 Klaviyo 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 Klaviyo 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.
Klaviyo
connected
Snapfulfil
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Klaviyo 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 · Klaviyo ⇄ 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.
Klaviyo SnapfulfilCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Klaviyo and Snapfulfil integration FAQ
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Yes. Stacksync provides a managed, real-time two-way integration between Klaviyo and Snapfulfil: authenticate both systems, choose the objects to sync (such as Klaviyo's Profiles and Lists), map fields visually, and changes propagate both ways in milliseconds — no code required.
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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.
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Common patterns for Klaviyo and Snapfulfil: Where Klaviyo faces customers and Snapfulfil carries account records; Where Klaviyo collects payments: transactions post through; Where Snapfulfil is the HR or people system of record. Order, invoice, or account status from Snapfulfil appears alongside the customer in Klaviyo, so front-line teams answer from live data.
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Klaviyo: REST API compliant with the JSON:API specification. Authentication: OAuth 2.0 for apps or private API keys. Snapfulfil: REST-style web service API. Authentication: API credentials issued for the warehouse instance. Stacksync manages authentication, retries, and rate limits on both sides.
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Klaviyo: API versioning is handled with a date-based revision header, letting integrations pin behavior to a specific release. 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 Klaviyo 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 Klaviyo and Snapfulfil records are not retained after a sync operation.
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 Klaviyo and Snapfulfil.
Popular · 8 of 386
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Klaviyo ⇄ Visibility ERP -
Klaviyo ⇄ NetSuite -
Klaviyo ⇄ Dynamics 365 F&O - Klaviyo ⇄ SuiteAnalytics
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Snapfulfil ⇄ GitHub -
Snapfulfil ⇄ Atlassian -
Snapfulfil ⇄ Braze -
Snapfulfil ⇄ ConnectWise
No integrations match .
