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Business productivity ⇄ CRM

Klaviyo to Streak CRM integration — real-time, two-way sync

Keep Klaviyo and Streak CRM 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 Klaviyo and Streak CRM

Sync what happens in Klaviyo with the customer records in Streak CRM, in real time and in both directions.

The CRM is supposed to be the record of every customer relationship, but customer-relevant information also accumulates in the other tools a team runs. Whatever Klaviyo holds or produces that touches a customer, whether conversations, payments, replies, enriched data, or notes, the CRM only benefits if it arrives without someone copying it over.

Stacksync connects Flows, Templates, Catalog Items, Tags in Klaviyo to Boxes, Stages, Contacts, Organizations in Streak CRM with bi-directional, real-time sync. Activity and record changes in Klaviyo update the matching contact or account in Streak CRM, and CRM data flows the other way wherever Klaviyo can store and use it.

Common use cases

  • Keep suppression and consent status consistent between Klaviyo and other email or SMS tools
  • Sync catalog items from an ERP or PIM so product recommendations and back-in-stock flows use current data
  • Hand off closed-won boxes to billing or fulfillment systems and sync status back into the pipeline
  • Keep contacts aligned between Streak and email marketing or enrichment tools

Where Klaviyo runs outreach

Prospects, sends, and replies sync into Streak CRM, keeping lead status current without manual imports.

Where Klaviyo supplies contact or company data

Enriched fields land directly on records in Streak CRM, and refreshes keep them from going stale.

Where Klaviyo processes payments

Charges, refunds, and subscription changes appear on the account in Streak CRM, so revenue context lives with the relationship.

What you can sync between Klaviyo and Streak CRM

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 Streak CRM objects
Catalog Items Product catalog records synced from an ERP or PIM power product blocks and back-in-stock triggers. Tasks To-dos attached to boxes for follow-up tracking.
Tags Organizational labels on campaigns, flows, and lists support reporting rollups. Email threads Gmail threads linked to boxes, since the CRM lives inside the inbox.
Profiles Person records with arbitrary custom properties are the target for CRM and warehouse-sourced attributes. Custom fields Per-pipeline field definitions that determine what data a box can hold.
Lists Static audience memberships sync in from CRMs and forms for targeting. Pipelines Define the process and the custom field schema that boxes in them carry.
Segments Dynamic audiences are readable so other tools can mirror who qualifies. Boxes The core record (a deal, hire, or project) tracked through pipeline stages.
Events Timestamped behavioral records tied to metrics; external order and product events are pushed in to trigger flows. Stages Pipeline steps whose transitions are the usual trigger for downstream syncs.
What ships with Klaviyo ⇄ Streak CRM

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

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

Real-time

Two-way sync

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

No-code + pro-code

Workflow automation

Trigger automated workflows whenever Klaviyo or Streak CRM 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 Streak CRM record.

Observability

Monitoring

Track your Klaviyo ⇄ Streak CRM 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 Streak CRM.

How the Klaviyo and Streak CRM 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

Streak CRM

Integration surface
REST API
Authentication
API key issued per user
Change detection
Polling against pipeline, box, and contact endpoints; Streak's automations can send outbound webhooks on higher plans
Capabilities
read · write
Rate limits
Subject to the platform's API rate limits; quotas are not prominently published
How it works

How to connect Klaviyo to Streak CRM — 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 Klaviyo and Streak CRM 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
    Klaviyo connected
    Streak CRM connected
    OAuth 2.0
    SSH tunnel
    SSL certificate
    VPC peering
  2. 02

    Choose tables

    Pick the Klaviyo and Streak CRM 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 · Klaviyo ⇄ Streak CRM
    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
    Klaviyo Streak CRM
    Company company_name text
    Email email text
    Amount amount numeric
    Created created_at timestamp
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FAQ

Klaviyo and Streak CRM integration FAQ

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.

Learn more about security
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:

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 386 integrations available for Klaviyo and Streak CRM.

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