Why Connect Apollo.io and HubSpot?

The Apollo.io and HubSpot integration syncs your prospecting data directly into your CRM. It pushes enriched contact records, maps sequence engagement to HubSpot timelines, and lets you build Apollo campaigns from HubSpot lists. For sales teams running outbound, this connection eliminates the manual CSV export cycle that wastes 3-5 hours per week on data entry.

This guide walks you through setup in seven steps, covers the three features that matter most, and flags the issues your team will hit during rollout.

If your team runs cold outreach at scale and needs a managed setup, Modern Inbound has booked 2,000+ B2B meetings with a 98%+ deliverability rate across client campaigns. Our team configures these integrations as part of every new client onboarding, typically live within 15 days.

How the Apollo-HubSpot Integration Works

This integration syncs contacts, company records, and engagement data between Apollo.io and HubSpot in a bidirectional flow, updating in near real time via native API connection. You choose between full two-way sync or enrichment-only mode depending on your workflow.

When two-way sync is active, contacts pushed from Apollo land in HubSpot with mapped field values. Sequence activity (sends, opens, replies) logs to HubSpot contact timelines. In the other direction, HubSpot lists feed into Apollo for targeted prospecting campaigns.

The enrichment-only mode is simpler. Apollo appends job title, company size, tech stack, and direct phone numbers to your existing HubSpot contacts without creating new records or pulling data back into Apollo.

How to Set Up Apollo.io + HubSpot in 7 Steps

Setup requires Super Admin access in HubSpot and admin or CRM edit permissions in Apollo. You need at least an Apollo Basic plan ($49/user/month, annual) since the Free tier does not include CRM integrations. Most teams finish initial configuration in under 30 minutes.

Step 1: Install Apollo from the HubSpot Marketplace

Open the HubSpot App Marketplace and search for "Apollo Enrichment." Click Install App. HubSpot will prompt you to select which HubSpot account to connect if you manage multiple portals.

Step 2: Authenticate with Apollo Credentials

After installation, HubSpot redirects to Apollo's OAuth authorization page. Log in with your Apollo admin account. Select either the two-way sync option (labeled "HubSpot") or the enrichment-only option (labeled "HubSpot Data Enrichment").

Step 3: Map Contact Fields

Navigate to Apollo Settings, then Integrations, then HubSpot, then Field Mapping. Map Apollo fields to HubSpot properties. Key fields to map: job title, company size, industry, tech stack, and direct phone number. Create custom HubSpot properties for Apollo-specific fields that have no default match.

Tip from our team: Standardize picklist values before mapping. Field mapping conflicts are the number one support issue, according to Apollo's knowledge base. If Apollo uses "51-200" for company size and HubSpot uses "51-100" and "101-200," the sync will throw validation errors on every record.

Step 4: Configure Sync Rules

In the Sync tab, decide whether Apollo pushes new contacts only or syncs all records including updates. Under "Stages for Push Contacts," define which Apollo pipeline stages trigger a push to HubSpot. Map these stages to HubSpot lifecycle stages (e.g., Apollo "Qualified" to HubSpot "Sales Qualified Lead").

Step 5: Set Up List-Based Prospecting

Create active HubSpot lists filtered by your ICP criteria. In Apollo, pull these lists to build targeted sequences. This approach keeps your prospecting data tied to your CRM segments, so your outbound targeting stays aligned with your marketing data.

Step 6: Enable Engagement Tracking

Turn on engagement sync so sends, opens, clicks, and replies from Apollo sequences appear on HubSpot contact timelines. One known issue: the HubSpot tracking pixel can load inside Apollo's email preview, triggering false open notifications (source: HubSpot Community). Disable the HubSpot pixel on Apollo-sent emails to prevent inflated open rates.

Step 7: Test with 10 Contacts

Push a small batch through the full workflow before enabling bulk sync. Verify: contacts appear in HubSpot with correct field values, engagement events log to timelines, no duplicate records are created, and lifecycle stages map correctly. Check Apollo's error log at Settings, then Integrations, then HubSpot, then Error Logs for any failed pushes.

Three Features That Make This Integration Worth Setting Up

The Apollo-HubSpot connection does three things well: contact enrichment, sequence activity sync, and list-based prospecting. Each one eliminates a manual workflow that slows down outbound teams running high-volume campaigns.

Contact Enrichment

Apollo appends job title, company size, tech stack, revenue data, and direct phone numbers to your HubSpot contact records. This saves you from running separate enrichment tools or buying third-party data. According to Apollo's marketplace listing, the enrichment covers 275M+ contacts and 73M+ companies in their database.

Sequence Activity Sync

Every Apollo sequence action (email sends, opens, clicks, replies) appears on the HubSpot contact timeline. Your AEs see the full outbound history before jumping on a call. No more asking "did we already email this person?" across disconnected tools.

List-Based Prospecting

Push HubSpot lists directly into Apollo for campaign targeting. This means your marketing team's segmentation work feeds directly into outbound sequences. When marketing updates a list based on website behavior or lead scoring, Apollo campaigns automatically reflect those changes.

Common Issues and How to Fix Them

Three problems account for the majority of Apollo-HubSpot integration support tickets, based on HubSpot Community threads and Apollo's documentation. Address these during initial setup to avoid cleanup work later.

Field mapping conflicts: Both systems use different picklist values for the same fields. Standardize your dropdown values in both tools before enabling sync. Check company size, industry, and lifecycle stage fields specifically.

Duplicate contacts: HubSpot enforces one contact per email address. When Apollo pushes a contact whose email already exists, the push fails silently and logs to the error queue. Review error logs weekly and deduplicate using email as the primary key with company domain as a secondary check.

API rate limits during historical sync: Initial bulk syncs of large databases (10,000+ contacts) can hit Apollo's API rate limits. Batch your first sync in groups of 2,000-5,000 contacts. Organization plan users ($119/user/month) get higher rate limits for faster initial imports.

Pricing and Plan Requirements

You need paid plans on both sides. Apollo's Basic plan ($49/user/month annual, $59 month-to-month) is the minimum tier that includes HubSpot integration. HubSpot's free CRM supports the connection, but you will want Sales Hub Starter ($20/user/month) or higher for workflow automation that triggers based on Apollo data.

Apollo's Professional plan ($79/user/month) adds more monthly credits for enrichment. The Organization tier ($119/user/month, 3-user minimum) provides the highest API rate limits, which matters for teams syncing 10,000+ contacts. For context, according to Aptitude 8, mid-market teams can spend $2,000 to $10,000 on implementation services for complex bidirectional sync configurations.

Frequently Asked Questions

Which Apollo.io plan includes the HubSpot integration?

The Basic plan ($49/user/month annual billing) is the minimum tier. The Free plan does not include CRM integrations. Professional and Organization plans offer the same integration with higher API rate limits and more enrichment credits per month.

Does the Apollo-HubSpot integration sync in real time?

The native integration syncs in near real time. Contact pushes, field updates, and engagement data flow between systems within minutes. Initial historical syncs of large databases take longer due to API rate limits. Plan for 2-4 hours for databases over 10,000 contacts.

How do I fix duplicate contacts between Apollo and HubSpot?

HubSpot allows only one contact per email address. When Apollo pushes a contact whose email already exists, it skips the record and logs the error. Review error logs at Apollo Settings, then Integrations, then HubSpot, then Error Logs. Use email as your primary deduplication key and add a secondary check on company domain.

Can I use the integration for enrichment only without two-way sync?

Yes. During setup, choose the "HubSpot Data Enrichment" option instead of full two-way sync. This mode appends Apollo data (job titles, company size, tech stack) to existing HubSpot contacts without creating new records or syncing engagement data back to Apollo.

Skip the Setup. Get Meetings Instead.

Configuring integrations is step one. Building campaigns that generate replies is the hard part. Modern Inbound manages the full cold email pipeline for B2B teams, from infrastructure (7-30 domains per client) to targeting to copy. We have booked 2,000+ meetings, maintain 98%+ deliverability, and get clients live in 15 days. Rated 4.9 stars across 47 reviews.

Talk to our team about managed outbound.