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CRM ⇄ Business productivity

HubSpot to Notion integration — real-time, two-way sync

Keep HubSpot and Notion in sync without custom scripts. Cut weeks of integration work, eliminate silent data drift, and give your team a single, reliable source of truth.

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Why teams connect HubSpot and Notion

Sync what happens in Notion with the customer records in HubSpot, 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 Notion 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 Comments, Files and attachments, Pages, Databases / Data sources in Notion to Pipeline, Stages, Audit, Contact in HubSpot with bi-directional, real-time sync. Activity and record changes in Notion update the matching contact or account in HubSpot, and CRM data flows the other way wherever Notion can store and use it.

Common use cases

  • 01 Read Notion wiki Pages and their Blocks into a database or search index for internal knowledge retrieval.
  • 02 Two-way sync a Notion projects or tasks data source with a Postgres table so engineers work in SQL while the team edits Pages in Notion, mapping status, date, and assignee properties both ways.
  • 03 Write warehouse-computed lead and account scores back to HubSpot properties on a schedule or in near real time.
  • 04 Sync HubSpot Tickets with an internal support database to unify service reporting across channels.

Common sync patterns

Where Notion supplies contact or company data

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

Where Notion can store CRM context: fields kept current

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

What you can sync between HubSpot and Notion

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.

HubSpot objects Notion objects How this pairing syncs
Audit Synced with incremental and full sync per the Stacksync docs. Files and attachments File-property and file-block values. Notion-hosted URLs are temporary and expire, so files are re-fetched or copied at sync time. Audit is specific to HubSpot and Files and attachments to Notion — each maps to any object or custom field on the other side.
Contact Synced with incremental and full sync per the Stacksync docs. Pages The core content unit and also every row of a database; synced two-way as records, with typed properties mapping to table columns. Contact is specific to HubSpot and Pages to Notion — each maps to any object or custom field on the other side.
Company Synced with incremental and full sync per the Stacksync docs. Databases / Data sources Collections of pages with a typed property schema. Since the 2025-09-03 API a database is a container holding one or more data sources; syncs target a specific data_source_id. Company is specific to HubSpot and Databases / Data sources to Notion — each maps to any object or custom field on the other side.
Deal Synced with incremental and full sync per the Stacksync docs. Properties Typed columns on a page — title, rich_text, number, select, multi_select, date, people, relation, status, checkbox, URL. Read and written both ways. Deal is specific to HubSpot and Properties to Notion — each maps to any object or custom field on the other side.
Line Item Synced with incremental and full sync per the Stacksync docs. Blocks The page body — paragraphs, headings, to-dos, tables — nested as children and fetched recursively, separate from a page's properties. Line Item is specific to HubSpot and Blocks to Notion — each maps to any object or custom field on the other side.
Product Synced with incremental and full sync per the Stacksync docs. Formula and Rollup properties Values computed by Notion from other fields; read-only, so they are pulled out for reporting but never written back. Product is specific to HubSpot and Formula and Rollup properties to Notion — each maps to any object or custom field on the other side.

How changes propagate between HubSpot and Notion

Each direction of the sync is driven by what the source system can signal and what the destination accepts — detection, delivery, and expected latency below.

HubSpot Notion Sub-second propagation

DetectionHubSpot pushes changes as they happen — webhook events backed by change data capture. Records: incremental near-real-time change tracking.

DeliveryEach detected change is written to Notion through its API, with automatic retries and rate-limit backoff.

Notion HubSpot Sub-second propagation

DetectionNotion notifies Stacksync of record changes through webhook events. Workspace webhooks (page.created, page.content_updated, data_source.schema_updated, comment.created.

DeliveryEach detected change is written to HubSpot through its API, with automatic retries and rate-limit backoff.

Rate-limit considerations

  • HubSpot: Request limits vary by subscription tier and API type.
  • Notion: Average of ~3 requests/second per integration with some bursts; 429 with a Retry-After header when exceeded. Payloads capped at 500 KB and 1000 block elements.
What ships with HubSpot ⇄ Notion

Connect HubSpot and Notion for flexible, real-time data sync.

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

Real-time

Two-way sync

Changes in HubSpot or Notion instantly reflect in both systems. No stale data, no manual imports.

No-code + pro-code

Workflow automation

Trigger automated workflows whenever HubSpot or Notion 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 HubSpot or Notion record.

Observability

Monitoring

Track your HubSpot ⇄ Notion sync health, view errors, and replay failed events in one click.

Trading partners

EDI

Transform legacy EDI complexity into simple database interactions between HubSpot and Notion.

How the HubSpot and Notion connectors work

HubSpot

Integration surface
REST API (CRM v3)
Authentication
OAuth (choose HubSpot account and authorize Stacksync); requires a HubSpot 'Super Admin' to grant access; optional "Grant access to sensitive fields" checkbox for sensitive/highly sensitive fields
Change detection
Records: incremental near-real-time change tracking. Associations: HubSpot has no native association CDC
Capabilities
read · write · CDC · webhooks
Rate limits
Request limits vary by subscription tier and API type.
HubSpot setup guide

Notion

Integration surface
REST API (api.notion.com/v1)
Authentication
OAuth 2.0 for public integrations, or an internal integration secret (bearer token); every request must send a Notion-Version header
Change detection
Workspace webhooks (page.created, page.content_updated, data_source.schema_updated, comment.created; HMAC-SHA256 signed) plus polling on each page's last_edited_time
Capabilities
read · write · webhooks
Rate limits
Average of ~3 requests/second per integration with some bursts; 429 with a Retry-After header when exceeded. Payloads capped at 500 KB and 1000 block elements.
How it works

How to connect HubSpot to Notion — 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 HubSpot and Notion 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
    HubSpot connected
    Notion connected
    OAuth 2.0
    SSH tunnel
    SSL certificate
    VPC peering
  2. 02

    Choose tables

    Pick the HubSpot and Notion 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 · HubSpot ⇄ Notion
    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
    HubSpot Notion
    Company company_name text
    Email email text
    Amount amount numeric
    Created created_at timestamp
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FAQ

HubSpot and Notion integration FAQ

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
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→ 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 541 integrations available for HubSpot and Notion.

Popular · 7 of 541
All HubSpot integrations All Notion integrations Browse all integrations
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