Real-time
Two-way sync
Changes in Freshsales or Kustomer instantly reflect in both systems. No stale data, no manual imports.
CRM
Freshsales to Kustomer integration — real-time, two-way sync
Keep Freshsales and Kustomer 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 Freshsales and Kustomer
Run Freshsales and Kustomer side by side with the same accounts and contacts in both, whether they serve different teams or one is replacing the other.
Two CRMs in one company is more common than anyone plans for: an acquisition brings its own system, regions or business units standardize differently, or a migration is under way and both are live. In every case, some of the same companies and people exist in both systems, and every day of manual double entry pushes the copies further apart.
Stacksync syncs Appointments, Notes, Sales activities, Products in Freshsales with Users, Teams, Tags, Notes in Kustomer in real time and in both directions, with field-level mapping and matching on identifiers you choose. Update a record in either CRM and the other reflects it within seconds.
Common use cases
- Sync sales activities and appointments into analytics tools for rep productivity reporting.
- Two-way sync of contacts and accounts between Freshsales and a Postgres database so product and data teams query CRM data with SQL.
- Mirror conversations and satisfaction data into a warehouse for support analytics and agent performance reporting
- Keep customer attributes updated from billing systems so routing rules and SLAs reflect account value
Migration with a parallel run
When one CRM is replacing the other, run both fully live until cutover, with no snapshot gap and no data freeze.
Divisional or regional split
Where each CRM serves a different team or region, sync just the shared accounts and contacts so handoffs and cross-sell work.
Where both track pipeline: deal visibility across systems
Deal stage and value on shared accounts stay visible from either CRM.
What you can sync between Freshsales and Kustomer
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.
| Freshsales objects | Kustomer objects | |
|---|---|---|
| Contacts Person records carrying lifecycle stages; the main entity for two-way CRM syncs. | Tags Labels on conversations and customers sync for categorization and analytics. | |
| Accounts Company records kept aligned with billing, ERP, and warehouse tables. | Notes Internal annotations carry context alongside synced conversations. | |
| Deals Pipeline records synced to a warehouse for revenue reporting. | Customers The central record whose timeline aggregates every interaction; external attributes sync onto it. | |
| Tasks Rep to-dos created from external triggers or synced for productivity reporting. | Conversations Support threads across channels sync outward for analytics and CRM context. | |
| Appointments Scheduled meetings readable for activity analytics. | Messages Individual messages within conversations support full-thread replication. | |
| Notes Free-text records attached to contacts, accounts, and deals. | Companies Organization records group customers and map to CRM accounts. |
What ships with Freshsales ⇄ Kustomer
Connect Freshsales and Kustomer for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Freshsales–Kustomer connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Freshsales or Kustomer 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 Freshsales or Kustomer record.
Observability
Monitoring
Track your Freshsales ⇄ Kustomer sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Freshsales and Kustomer.
How the Freshsales and Kustomer connectors work
Freshsales
- Integration surface
- REST API
- Authentication
- API key sent as a Token authorization header
- Change detection
- Polling with updated-at filters through views; outbound webhooks can be configured via workflow automations
- Capabilities
- read · write · webhooks
- Rate limits
- Subject to per-account API rate limits that vary by Freshworks plan
Kustomer
- Integration surface
- REST API
- Authentication
- API key used as a bearer token, scoped by role
- Change detection
- Outbound webhooks on record events, plus polling for backfill
- Capabilities
- read · write · webhooks
- Rate limits
- Subject to the platform's API rate limits
How it works
How to connect Freshsales to Kustomer — 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 Freshsales and Kustomer with each platform's native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.
Freshsales
connected
Kustomer
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Freshsales and Kustomer 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 · Freshsales ⇄ KustomerCustomers 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.
Freshsales KustomerCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Freshsales and Kustomer integration FAQ
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Yes. Stacksync provides a managed, real-time two-way integration between Freshsales and Kustomer: authenticate both systems, choose the objects to sync (such as Freshsales's Contacts and Accounts), map fields visually, and changes propagate both ways in milliseconds — no code required.
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Freshsales: REST API. Authentication: API key sent as a Token authorization header. Kustomer: REST API. Authentication: API key used as a bearer token, scoped by role. Stacksync manages authentication, retries, and rate limits on both sides.
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Freshsales: Each module supports custom fields, which the API returns alongside standard fields for mapping. Kustomer: Custom object types are called Klasses, and they are the standard mechanism for landing external data like orders and subscriptions where agents work. Stacksync's field mapping accounts for these differences between Freshsales and Kustomer 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 Freshsales and Kustomer 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 Freshsales and Kustomer connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Freshsales–Kustomer integration in-house.
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Yes — Stacksync ships production-grade connectors for both Freshsales and Kustomer. 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 Freshsales and Kustomer.
Popular · 8 of 386
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Freshsales ⇄ Folk CRM -
Freshsales ⇄ Freshworks CRM -
Freshsales ⇄ Gladly -
Freshsales ⇄ Gorgias -
Kustomer ⇄ Creatio CRM -
Kustomer ⇄ Drift - Kustomer ⇄ Folk CRM
- Kustomer ⇄ Freshworks CRM
No integrations match .
