Real-time
Two-way sync
Changes in Braze or Klaviyo instantly reflect in both systems. No stale data, no manual imports.
Business productivity
Braze to Klaviyo integration — real-time, two-way sync
Keep Braze 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
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Migrated from Heroku Connect
Migrated from Matillion
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Migrated from Fivetran
Case study
Migrated from Celigo
Why teams connect Braze and Klaviyo
Stop re-entering the same information in Braze and Klaviyo: Stacksync keeps the records they share consistent in real time, in both directions.
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 Users, Custom Attributes, Custom Events, Purchases in Braze with Catalog Items, Tags, Profiles, Lists in Klaviyo 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
- Sync audience membership computed in the warehouse into Braze segments for targeting.
- Sync CRM and billing attributes onto Braze user profiles so lifecycle campaigns target accurate plan and status data.
- 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
Where Klaviyo is where the team documents or plans: keep its data fed
Information that originates in Braze stays current in Klaviyo instead of going stale after a one-time paste.
Handoffs between teams
When work started in one tool continues in the other, the shared fields travel with it automatically.
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.
What you can sync between Braze 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.
| Braze objects | Klaviyo objects | |
|---|---|---|
| Content Blocks Reusable message content referenced across campaigns. | Catalog Items Product catalog records synced from an ERP or PIM power product blocks and back-in-stock triggers. | |
| Users The central profile object, identified by external ID, Braze ID, or user aliases; the main sync target. | Tags Organizational labels on campaigns, flows, and lists support reporting rollups. | |
| Custom Attributes Profile fields written from CRMs, warehouses, and product databases to drive personalization. | Profiles Person records with arbitrary custom properties are the target for CRM and warehouse-sourced attributes. | |
| Custom Events Behavioral events pushed into Braze to trigger campaigns and Canvases. | Lists Static audience memberships sync in from CRMs and forms for targeting. | |
| Purchases Transaction records logged against profiles for revenue-based targeting. | Segments Dynamic audiences are readable so other tools can mirror who qualifies. | |
| Segments Audience definitions read for membership export and campaign targeting. | Events Timestamped behavioral records tied to metrics; external order and product events are pushed in to trigger flows. |
What ships with Braze ⇄ Klaviyo
Connect Braze and Klaviyo for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Braze–Klaviyo connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Braze 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 Braze or Klaviyo record.
Observability
Monitoring
Track your Braze ⇄ Klaviyo sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Braze and Klaviyo.
How the Braze and Klaviyo connectors work
Braze
- Integration surface
- REST API
- Authentication
- REST API keys scoped to specific endpoints, issued per workspace
- Change detection
- Braze Currents streams engagement events outward; profile reads otherwise rely on export endpoints and polling
- Capabilities
- read · write
- Rate limits
- Endpoints have per-endpoint rate limits documented by Braze; batch endpoints accept multiple users per request
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 Braze 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 Braze 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.
Braze
connected
Klaviyo
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Braze 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 · Braze ⇄ 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.
Braze KlaviyoCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Braze and Klaviyo integration FAQ
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Yes. Stacksync provides a managed, real-time two-way integration between Braze and Klaviyo: authenticate both systems, choose the objects to sync (such as Braze's Content Blocks and Users), map fields visually, and changes propagate both ways in milliseconds — no code required.
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Braze: Profiles can be addressed by external ID, Braze ID, or user aliases, and identity resolution across these matters when merging data from other systems. Klaviyo: Klaviyo's current APIs follow the JSON:API specification, so payloads use typed resource objects with relationships rather than flat JSON. Stacksync's field mapping accounts for these differences between Braze 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 Braze 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 Braze and Klaviyo connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Braze–Klaviyo integration in-house.
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Yes — Stacksync ships production-grade connectors for both Braze and Klaviyo. 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 Braze: Braze Currents streams engagement events outward; profile reads otherwise rely on export endpoints and polling. On Klaviyo: Polling on updated timestamps; outbound webhooks exist for event topics (availability depends on plan or app-partner status) and as flow webhook actions. 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 Braze and Klaviyo.
Popular · 8 of 386
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Braze ⇄ Resend - Braze ⇄ ServiceNow
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Braze ⇄ Slack -
Braze ⇄ Zendesk -
Klaviyo ⇄ Microsoft Dynamics 365 -
Klaviyo ⇄ Microsoft Teams -
Klaviyo ⇄ NextGen Healthcare -
Klaviyo ⇄ Orderful
No integrations match .
