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CRM

Connect Apollo.io to any app with two-way sync.

Two-way sync Apollo.io across all your CRMs, databases, data warehouses, EDI systems, and AI tools, with custom workflows tailored to your data.

  • 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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Object catalog

What Stacksync syncs in Apollo.io.

These objects sync between Apollo.io and any connected system, with field-level mapping and conflict resolution. Custom fields are picked up from the live schema where Apollo.io exposes them.

Contacts
People saved to your Apollo account, synced with emails, phone numbers, and enrichment fields.
Accounts
Company records with firmographic attributes, matched to CRM accounts during sync.
People (database records)
Prospects from Apollo's global database, pulled into downstream systems once enriched or saved.
Sequences
Outreach cadences (emailer campaigns in the API); enrollment status is read to track which contacts are being worked.
Deals (Opportunities)
Pipeline records that can be read and written to keep Apollo aligned with the CRM of record.
Tasks and calls
Rep activity records synced for activity reporting and coaching workflows.
Custom fields
Account- and contact-level custom attributes mapped field-by-field in a sync.
API surface

How Stacksync connects to Apollo.io.

The connector runs on Apollo.io's native API. Stacksync manages authentication, rate limits, retries, and schema changes so your team does not maintain integration code.

Connection
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
Rate limits
Rate limits and enrichment credits vary by plan; bulk endpoints are throttled separately from single-record calls

Sync directions

  • Read Supported
  • Write Supported
  • Change data capture Not available
  • Webhooks Not available
What ships with Apollo.io

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

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

Real-time

Two-way sync

Changes in Apollo.io instantly reflect across connected systems. No stale data, no manual imports.

No-code + pro-code

Workflow automation

Trigger automated workflows whenever Apollo.io 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 record.

Observability

Monitoring

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

Trading partners

EDI

Transform legacy EDI complexity into simple database interactions.

Use cases

What teams run on the Apollo.io connector.

Apollo.io is bought by sales, RevOps, and marketing operations teams as a combined B2B contact database, prospecting, and engagement platform, and it positions itself as consolidating data enrichment, email sequencing, and deal management into one tool that integrates with CRMs like Salesforce and HubSpot rather than replacing them. Its gravity is the prospect layer: Contacts, Accounts, Sequences activity, and Deals accumulate in Apollo and must be reconciled with the CRM system of record to keep reporting and routing consistent.

  • RevOps
  • Sales operations
  • Marketing operations
  • Data engineering

  1. Sync Apollo contacts and accounts into Salesforce or HubSpot so enriched prospecting data lands in the CRM of record.

  2. Push CRM opportunity stages back into Apollo so reps see pipeline context while sequencing.

  3. Land sequence enrollment status and outcomes in a warehouse for outbound performance reporting.

  4. Keep Apollo account lists aligned with an ICP table maintained in Postgres or Snowflake.

  5. Deduplicate contacts across Apollo and the CRM by syncing on email as the match key.

  6. Two-way sync Contacts and Accounts between Apollo and the CRM so enrichment and prospecting data reaches the system of record without CSV exports, and CRM edits flow back.

All Apollo.io integrations

Pick the system you need to keep in sync with Apollo.io. Each page covers the sync setup, field mapping, and common workflows for that pair.

CRM · 32

ERP · 8

Database · 17

Data warehouse · 10

Business productivity · 27

Accounting and finance · 11

How it works

Set up Apollo.io in minutes, without APIs.

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 with its 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
    OAuth 2.0
    SSH tunnel
    SSL certificate
    VPC peering
  2. 02

    Choose tables

    Pick the Apollo.io objects to sync — Stacksync auto-detects the schema, 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
    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 database
    Company company_name text
    Email email text
    Amount amount numeric
    Created created_at timestamp
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FAQ

Apollo.io connector FAQ

What can I sync with the Apollo.io connector?

Apollo.io's core objects — Contacts, Accounts, People (database records), Sequences and custom fields — can sync with any of 302 other systems. Every integration is real-time and bidirectional, with field-level mapping and conflict resolution.

How does Stacksync connect to Apollo.io?

Via REST API, authenticated with API key (passed in request headers); master keys unlock account-wide endpoints. Changes are detected as follows — polling on updated-at timestamps; webhook callbacks exist only for delivering asynchronous enrichment results, not as a general change-event stream. Stacksync manages rate limits, retries, and schema changes automatically.

Is the Apollo.io connector two-way?

Yes. Changes made in Apollo.io propagate to the connected system and vice versa, in milliseconds. One-way flows are also supported when a direction should stay read-only.

How long does an Apollo.io integration take to set up?

Most Apollo.io integrations go live in minutes: authenticate Apollo.io and the other system, pick objects and fields, and enable the sync. No code and no infrastructure to manage.

Is Apollo.io data secure in transit?

Stacksync is SOC 2 Type II, ISO 27001, GDPR and HIPAA compliant. Apollo.io data is encrypted in transit, and a zero-persistent-storage architecture means records are not retained after a sync operation.

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
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