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CRM ⇄ Business productivity

Apollo.io to Zendesk integration — real-time, two-way sync

Keep Apollo.io and Zendesk 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 Apollo.io and Zendesk

Sync what happens in Zendesk with the customer records in Apollo.io, 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 Zendesk 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 Attachments, Ticket Forms, Tickets, Tickets Comments in Zendesk to Tasks and calls, Custom fields, Contacts, Accounts in Apollo.io with bi-directional, real-time sync. Activity and record changes in Zendesk update the matching contact or account in Apollo.io, and CRM data flows the other way wherever Zendesk can store and use it.

Common use cases

  • Sync tickets, users, and organizations into Postgres so support analytics run on SQL instead of repeated API pulls.
  • Write CRM account tier, owner, and renewal data onto Zendesk organizations and ticket fields so agents see context in the ticket.
  • Deduplicate contacts across Apollo and the CRM by syncing on email as the match key.
  • Push CRM opportunity stages back into Apollo so reps see pipeline context while sequencing.

Where Zendesk can store CRM context: fields kept current

Owner, lifecycle stage, or account details from Apollo.io sync into Zendesk, so people working there have the context without switching tools.

Where Zendesk handles support or shared inboxes

Tickets and conversations attach to the right contact and account in Apollo.io, so sales sees open issues before the next call.

Where Zendesk supplies contact or company data

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

What you can sync between Apollo.io and Zendesk

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.

Apollo.io objects Zendesk objects
Custom fields Account- and contact-level custom attributes mapped field-by-field in a sync. Ticket Forms Synced with incremental and full sync per the Stacksync docs.
Contacts People saved to your Apollo account, synced with emails, phone numbers, and enrichment fields. Tickets The central work object; synced to databases for SLA and volume reporting or mirrored into engineering tools.
Accounts Company records with firmographic attributes, matched to CRM accounts during sync. Tickets Comments Synced with incremental and full sync per the Stacksync docs.
People (database records) Prospects from Apollo's global database, pulled into downstream systems once enriched or saved. Users End users and agents; matched to CRM contacts to keep requester data consistent.
Sequences Outreach cadences (emailer campaigns in the API); enrollment status is read to track which contacts are being worked. Organizations Company groupings for users; typically kept aligned with CRM accounts.
Deals (Opportunities) Pipeline records that can be read and written to keep Apollo aligned with the CRM of record. Attachments Synced with incremental and full sync per the Stacksync docs.
What ships with Apollo.io ⇄ Zendesk

Connect Apollo.io and Zendesk for flexible, real-time data sync.

Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Apollo.io–Zendesk connection.

Real-time

Two-way sync

Changes in Apollo.io or Zendesk instantly reflect in both systems. No stale data, no manual imports.

No-code + pro-code

Workflow automation

Trigger automated workflows whenever Apollo.io or Zendesk 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 Apollo.io or Zendesk record.

Observability

Monitoring

Track your Apollo.io ⇄ Zendesk sync health, view errors, and replay failed events in one click.

Trading partners

EDI

Transform legacy EDI complexity into simple database interactions between Apollo.io and Zendesk.

How the Apollo.io and Zendesk connectors work

Apollo.io

Integration surface
REST API
Authentication
API key (passed in request headers); master keys unlock account-wide endpoints
Change detection
Polling on updated-at timestamps; webhook callbacks exist only for delivering asynchronous enrichment results, not as a general change-event stream
Capabilities
read · write
Rate limits
Rate limits and enrichment credits vary by plan; bulk endpoints are throttled separately from single-record calls

Zendesk

Integration surface
REST API
Authentication
OAuth app authorization: enter your Zendesk subdomain (from {sub_domain_name}.zendesk.com) in Stacksync Connections and click "Authorize App"
Change detection
Incremental export endpoints with cursor-based pagination, plus webhooks fired by triggers
Capabilities
read · write · webhooks
Rate limits
Request limits vary by plan; incremental export endpoints have their own allowances.
Zendesk setup guide
How it works

How to connect Apollo.io to Zendesk — 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 Apollo.io and Zendesk 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
    Apollo.io connected
    Zendesk connected
    OAuth 2.0
    SSH tunnel
    SSL certificate
    VPC peering
  2. 02

    Choose tables

    Pick the Apollo.io and Zendesk 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 · Apollo.io ⇄ Zendesk
    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
    Apollo.io Zendesk
    Company company_name text
    Email email text
    Amount amount numeric
    Created created_at timestamp
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FAQ

Apollo.io and Zendesk 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 Apollo.io and Zendesk.

Popular · 8 of 386
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