Real-time
Two-way sync
Changes in Klaviyo or Supabase instantly reflect in both systems. No stale data, no manual imports.
Business productivity ⇄ Database
Klaviyo to Supabase integration — real-time, two-way sync
Keep Klaviyo and Supabase 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
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Migrated from Matillion
Case study
Migrated from Fivetran
Case study
Migrated from Celigo
Why teams connect Klaviyo and Supabase
Mirror Klaviyo's data into Supabase so your own code can read and write it like any other table, with changes flowing both ways in seconds.
Engineers integrate with tools like Klaviyo through APIs, which means auth, pagination, rate limits, webhooks, and retry logic, all maintained forever and all different for every tool. Meanwhile the data would be trivial to use if it simply lived in Supabase.
Stacksync mirrors Events, Metrics, Campaigns, Flows from Klaviyo into Tables, Views, Schemas, auth.users in Supabase and keeps both sides in sync in real time. Your services query the database directly, and inserts or updates your code makes flow back into Klaviyo, so the tool and the database never disagree.
Common use cases
- Push offline, ERP, or subscription order events into Klaviyo as metrics to trigger post-purchase and win-back flows
- Mirror campaign and flow engagement events into a warehouse for revenue attribution alongside order data
- Push product events captured in Supabase Postgres to marketing tools for lifecycle campaigns
- Consolidate Supabase project data into a warehouse for analytics while keeping the app database as the system of record
Read Klaviyo with a query
Records from Klaviyo are ordinary rows in Supabase; join them, index them, and use them in application logic without touching the vendor API.
Automate Klaviyo from your codebase
Write to the synced tables in Supabase and Stacksync propagates the change into Klaviyo, replacing custom integration code.
React to changes as they happen
Updates in Klaviyo arrive as row changes in Supabase, so triggers, jobs, and services can respond in near real time.
What you can sync between Klaviyo and Supabase
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 | Supabase objects | |
|---|---|---|
| Metrics Event type definitions organize the activity stream used in segmentation and attribution. | Storage Object Metadata File metadata rows that can be joined to synced application data. | |
| Campaigns Email and SMS sends expose performance data for warehouse-based reporting. | Tables Standard Postgres tables; the primary two-way sync target. | |
| Flows Automation definitions and their engagement data sync outward for attribution. | Views Read-side projections exposed to outbound syncs. | |
| Templates Message templates are accessible via API for content management workflows. | Schemas Namespaces (public and custom) that scope sync access. | |
| Catalog Items Product catalog records synced from an ERP or PIM power product blocks and back-in-stock triggers. | auth.users Managed authentication users, often mirrored into CRM or support systems. | |
| Tags Organizational labels on campaigns, flows, and lists support reporting rollups. | Row Level Security Policies Row-level access rules that govern what the REST layer exposes. |
What ships with Klaviyo ⇄ Supabase
Connect Klaviyo and Supabase for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Klaviyo–Supabase connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Klaviyo or Supabase 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 Supabase record.
Observability
Monitoring
Track your Klaviyo ⇄ Supabase 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 Supabase.
How the Klaviyo and Supabase 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
Supabase
- Integration surface
- Direct PostgreSQL wire protocol connection, plus an auto-generated REST API (PostgREST)
- Authentication
- Database credentials (connection string) for SQL access; API keys (anon / service role) for the REST layer
- Change detection
- Log-based CDC via Postgres logical replication, the same WAL feed that powers Supabase Realtime; database webhooks can also fire on row changes
- Capabilities
- read · write · CDC · webhooks
- Rate limits
- SQL access is bounded by connection limits (pooled connections are provided); the REST layer is subject to the platform's limits
How it works
How to connect Klaviyo to Supabase — 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 Supabase 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
Supabase
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Klaviyo and Supabase 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 ⇄ SupabaseCustomers 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 SupabaseCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Klaviyo and Supabase integration FAQ
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Yes. Stacksync provides a managed, real-time two-way integration between Klaviyo and Supabase: authenticate both systems, choose the objects to sync (such as Klaviyo's Metrics and Campaigns), map fields visually, and changes propagate both ways in milliseconds — no code required.
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Klaviyo: REST API compliant with the JSON:API specification. Authentication: OAuth 2.0 for apps or private API keys. Supabase: Direct PostgreSQL wire protocol connection, plus an auto-generated REST API (PostgREST). Authentication: Database credentials (connection string) for SQL access; API keys (anon / service role) for the REST layer. Stacksync manages authentication, retries, and rate limits on both sides.
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Klaviyo: Klaviyo's current APIs follow the JSON:API specification, so payloads use typed resource objects with relationships rather than flat JSON. Supabase: Supabase Realtime is built on the Postgres write-ahead log, streaming row changes over websockets. Stacksync's field mapping accounts for these differences between Klaviyo and Supabase 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 Supabase 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 Klaviyo and Supabase connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Klaviyo–Supabase integration in-house.
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Yes — Stacksync ships production-grade connectors for both Klaviyo and Supabase. 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 Klaviyo and Supabase.
Popular · 8 of 386
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Klaviyo ⇄ TimescaleDB -
Klaviyo ⇄ VoltDB -
Klaviyo ⇄ YugabyteDB -
Klaviyo ⇄ PostgreSQL -
Supabase ⇄ Amazon Seller Central -
Supabase ⇄ SendGrid -
Supabase ⇄ Twilio -
Supabase ⇄ GitHub
No integrations match .
