Real-time
Two-way sync
Changes in Hyperline or Klaviyo instantly reflect in both systems. No stale data, no manual imports.
Accounting and finance ⇄ Business productivity
Hyperline to Klaviyo integration — real-time, two-way sync
Keep Hyperline and Klaviyo 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 Hyperline and Klaviyo
Connect the financial records in Hyperline with the work happening in Klaviyo, so both stay current without exports or copy-paste.
Hyperline holds the financial truth: who the customers are, what they were billed, what they paid. Klaviyo is where part of the day-to-day work happens, and that work often involves the same customers and transactions. Without a live connection, the two drift apart, and people end up answering questions from stale copies.
Stacksync keeps Credit notes, Customers, Subscriptions, Products / prices in Hyperline and Segments, Events, Metrics, Campaigns in Klaviyo in sync, bi-directionally and in real time. Whatever records Klaviyo keeps and whatever events it produces, the overlap with Hyperline is mapped field by field, and a change on either side shows up on the other within seconds.
There is no middleware to build, no API rate limits to babysit, and no nightly job that leaves the morning running on yesterday's data.
Common use cases
- Keep plan and entitlement state consistent between Hyperline and the application database that enforces feature access.
- Create billing customers automatically when new accounts appear in the CRM or product database.
- Sync catalog items from an ERP or PIM so product recommendations and back-in-stock flows use current data
- Sync customer profiles between Klaviyo and the CRM or warehouse so segments can use fields beyond storefront data
Where Klaviyo tracks people or companies: one identity
A customer's details updated in either system update the other, so finance and the rest of the business stop maintaining two versions of the same customer.
Where Klaviyo is a docs or knowledge workspace: reference data kept fresh
Figures teams rely on, like customer status or outstanding balances, stay current wherever Klaviyo surfaces them instead of going stale after a one-time paste.
Where Klaviyo handles customer conversations: billing context in view
Front-line teams see invoice and payment status from Hyperline next to the customer they are helping, without logging into the finance system.
What you can sync between Hyperline and Klaviyo
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.
| Hyperline objects | Klaviyo objects | |
|---|---|---|
| Invoices Issued billing documents synced into accounting and reporting systems. | Flows Automation definitions and their engagement data sync outward for attribution. | |
| Payments Settlement records used to reconcile revenue against invoices. | Templates Message templates are accessible via API for content management workflows. | |
| Billable events Metered consumption events ingested to drive usage-based charges. | Catalog Items Product catalog records synced from an ERP or PIM power product blocks and back-in-stock triggers. | |
| Credit notes Adjustments and refunds synced for accurate revenue reporting. | Tags Organizational labels on campaigns, flows, and lists support reporting rollups. | |
| Customers Billing accounts that syncs match against CRM and product records. | Profiles Person records with arbitrary custom properties are the target for CRM and warehouse-sourced attributes. | |
| Subscriptions Active plans and their lifecycle state, synced to show billing status elsewhere. | Lists Static audience memberships sync in from CRMs and forms for targeting. |
What ships with Hyperline ⇄ Klaviyo
Connect Hyperline and Klaviyo for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Hyperline–Klaviyo connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Hyperline or Klaviyo 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 Hyperline or Klaviyo record.
Observability
Monitoring
Track your Hyperline ⇄ Klaviyo sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Hyperline and Klaviyo.
How the Hyperline and Klaviyo connectors work
Hyperline
- Integration surface
- REST API
- Authentication
- API key (bearer token)
- Change detection
- Webhooks for billing events, with polling as a fallback
- Capabilities
- read · write · webhooks
- Rate limits
- Subject to the platform's API rate limits.
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
How it works
How to connect Hyperline to Klaviyo — 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 Hyperline and Klaviyo with each platform's native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.
Hyperline
connected
Klaviyo
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Hyperline and Klaviyo 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 · Hyperline ⇄ KlaviyoCustomers 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.
Hyperline KlaviyoCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Hyperline and Klaviyo integration FAQ
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Yes. Stacksync provides a managed, real-time two-way integration between Hyperline and Klaviyo: authenticate both systems, choose the objects to sync (such as Hyperline's Invoices and Payments), map fields visually, and changes propagate both ways in milliseconds — no code required.
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Hyperline: REST API. Authentication: API key (bearer token). Klaviyo: REST API compliant with the JSON:API specification. Authentication: OAuth 2.0 for apps or private API keys. Stacksync manages authentication, retries, and rate limits on both sides.
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Hyperline: As a billing system of record, most integrations treat it as the source for invoice and payment data while writing usage in. Klaviyo: API versioning is handled with a date-based revision header, letting integrations pin behavior to a specific release. Stacksync's field mapping accounts for these differences between Hyperline and Klaviyo 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 Hyperline and Klaviyo 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 Hyperline and Klaviyo connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Hyperline–Klaviyo integration in-house.
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Yes — Stacksync ships production-grade connectors for both Hyperline and Klaviyo. The connectors handle authentication, schema detection, rate limits, and retries; you configure the sync, and Stacksync operates it.
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 Hyperline and Klaviyo.
Popular · 8 of 386
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Hyperline ⇄ Resend - Hyperline ⇄ ServiceNow
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Hyperline ⇄ Slack -
Hyperline ⇄ Zendesk -
Klaviyo ⇄ Chargebee -
Klaviyo ⇄ Pigment -
Klaviyo ⇄ QuickBooks -
Klaviyo ⇄ Stripe
No integrations match .
