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Business productivity

Front to Klaviyo integration — real-time, two-way sync

Keep Front 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

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Why teams connect Front and Klaviyo

Stop re-entering the same information in Front 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 Channels, Conversations, Messages, Comments in Front with Templates, Catalog Items, Tags, Profiles 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

  • 01 Feed CSAT and SLA reporting from synced conversation events rather than manual exports.
  • 02 Sync conversations, messages, and tags into Postgres for response-time and volume analytics across inboxes.
  • 03 Sync catalog items from an ERP or PIM so product recommendations and back-in-stock flows use current data
  • 04 Sync customer profiles between Klaviyo and the CRM or warehouse so segments can use fields beyond storefront data

Common sync patterns

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.

Where one tool produces events: mirror them in the other

Payments, replies, messages, or tickets created in one tool can create or update matching records in the other, keeping context in one place.

What you can sync between Front 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.

Front objects Klaviyo objects How this pairing syncs
Tags Labels applied to conversations; drive routing and category-level analytics. Tags Organizational labels on campaigns, flows, and lists support reporting rollups. Same entity on both sides — records pair one-to-one and field-level changes reconcile in both directions.
Messages Inbound and outbound emails, chats, and SMS within a conversation; read out for response-time reporting. Metrics Event type definitions organize the activity stream used in segmentation and attribution. Messages is specific to Front and Metrics to Klaviyo — each maps to any object or custom field on the other side.
Comments Internal team notes on conversations; usually read-only in syncs. Campaigns Email and SMS sends expose performance data for warehouse-based reporting. Comments is specific to Front and Campaigns to Klaviyo — each maps to any object or custom field on the other side.
Contacts People across channels; matched to CRM contacts, with custom fields carrying external context. Flows Automation definitions and their engagement data sync outward for attribution. Contacts is specific to Front and Flows to Klaviyo — each maps to any object or custom field on the other side.
Accounts Company groupings of contacts; kept aligned with CRM accounts. Templates Message templates are accessible via API for content management workflows. Accounts is specific to Front and Templates to Klaviyo — each maps to any object or custom field on the other side.
Inboxes Shared queues that conversations live in; used to segment reporting by team or channel. Catalog Items Product catalog records synced from an ERP or PIM power product blocks and back-in-stock triggers. Inboxes is specific to Front and Catalog Items to Klaviyo — each maps to any object or custom field on the other side.

How changes propagate between Front and Klaviyo

Each direction of the sync is driven by what the source system can signal and what the destination accepts — detection, delivery, and expected latency below.

Front Klaviyo Sub-second propagation

DetectionFront notifies Stacksync of record changes through webhook events. Application webhooks and rule-triggered webhooks, with the events endpoint available for polling.

DeliveryEach detected change is written to Klaviyo through its API, with automatic retries and rate-limit backoff.

Klaviyo Front Sub-second propagation

DetectionKlaviyo notifies Stacksync of record changes through webhook events. Polling on updated timestamps.

DeliveryEach detected change is written to Front through its API, with automatic retries and rate-limit backoff.

Rate-limit considerations

  • Front: Request limits vary by plan.
  • Klaviyo: Per-endpoint burst and steady rate limits apply.
What ships with Front ⇄ Klaviyo

Connect Front and Klaviyo for flexible, real-time data sync.

Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Front–Klaviyo connection.

Real-time

Two-way sync

Changes in Front or Klaviyo instantly reflect in both systems. No stale data, no manual imports.

No-code + pro-code

Workflow automation

Trigger automated workflows whenever Front 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 Front or Klaviyo record.

Observability

Monitoring

Track your Front ⇄ Klaviyo sync health, view errors, and replay failed events in one click.

Trading partners

EDI

Transform legacy EDI complexity into simple database interactions between Front and Klaviyo.

How the Front and Klaviyo connectors work

Front

Integration surface
REST API (Core API)
Authentication
OAuth authorization via the Stacksync UI ("Connections" > "create new connection" > "Front" > "Authorize") — no coding required
Change detection
Application webhooks and rule-triggered webhooks, with the events endpoint available for polling
Capabilities
read · write · webhooks
Rate limits
Request limits vary by plan.
Front setup guide

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 Front 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.

  1. 01

    Connect your apps

    Authenticate Front 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.

    • OAuth 2.0
    • SSH tunnel
    • VPC peering
    Front connected
    Klaviyo connected
    OAuth 2.0
    SSH tunnel
    SSL certificate
    VPC peering
  2. 02

    Choose tables

    Pick the Front 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.

    • Standard objects
    • Custom objects
    • Auto-schema
    objects · Front ⇄ Klaviyo
    Customers 12,480
    Sales Orders 8,213
    Invoices 5,902
    Items 1,344
  3. 03

    Map fields

    Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.

    • Auto-map
    • Type casting
    • Transforms
    Front Klaviyo
    Company company_name text
    Email email text
    Amount amount numeric
    Created created_at timestamp
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FAQ

Front and Klaviyo integration FAQ

SECURITY

Security teams trust 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.

Learn more about security
SOC 2 Type II
ISO 27001
HIPAA BAA
GDPR
CCPA
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:

OAuth 2 SSH Tunnelling SSL certificates IP Whitelisting VPN gateway VPC peering and more

Related integrations

Every pair below is a real-time, two-way sync. Search all 484 integrations available for Front and Klaviyo.

Popular · 8 of 484
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