# HubSpot integrations

*10 integrations*

**In short:** Integrating HubSpot means keeping its contacts, companies and deals consistent with the ERP, accounting, email and support tools that hold the rest of the customer picture. Typical connections turn closed-won deals into orders or invoices, push financial status back onto the deal, and sync lists or tickets. What breaks is matching, because HubSpot dedupes on email and domain while other systems use their own keys, plus consent handling and rate limits on both ends.

## What connects to HubSpot

HubSpot often runs marketing, the sales pipeline and sometimes service in one place. The rest of the customer picture lives in other systems, and HubSpot has to stay in agreement with them.

The most valuable connection is usually the ERP or accounting system. A closed-won deal becomes a sales order or an invoice, and order, delivery and payment status flow back onto the deal, as in [SAP S/4HANA to HubSpot](https://seamless.engineering/integrations/sap-s4hana-hubspot/) or [Xero to HubSpot](https://seamless.engineering/integrations/xero-hubspot/). The second group is other front-office tools: a CRM another team runs, an email platform, or a support desk such as [Zendesk](https://seamless.engineering/integrations/zendesk-hubspot/). There the job is keeping one person and one company, not two, across systems with different ideas of identity and consent.

## Where HubSpot integrations break

- **HubSpot's dedup rules are not the other system's.** HubSpot dedupes contacts on email and companies on domain. ERPs key on customer numbers, some CRMs tolerate duplicate emails, and shared inboxes break domain matching. Without a maintained cross-reference, records split or merge wrongly.
- **A deal amount is not an order.** It is one number in one currency, often typed by a rep. An ERP or accounting system needs line items that reference real products, tax treatment and the right currency, so the mapping builds those from the deal's line items.
- **Consent must not be overwritten.** Unsubscribes and marketing subscription status belong to one system. A blind sync that re-pushes old values re-subscribes people who opted out.
- **Rate limits apply per ten-second window and per day.** HubSpot caps requests by app and subscription tier, and throttles its search endpoint far harder than object reads. Backfills need batching, delta reads on last-modified and back-off on 429s.
- **Batch writes fail partially.** HubSpot batch endpoints can accept some records and reject others. The pipeline has to know which ones landed and retry only the rest, never the whole batch.

## All HubSpot integrations

### ERP ↔ CRM

- [SAP S/4HANA ↔ HubSpot](https://seamless.engineering/integrations/sap-s4hana-hubspot/): SAP S/4HANA HubSpot integration
- [NetSuite ↔ HubSpot](https://seamless.engineering/integrations/netsuite-hubspot/): NetSuite HubSpot integration
- [Business Central ↔ HubSpot](https://seamless.engineering/integrations/business-central-hubspot/): Business Central HubSpot integration

### CRM ↔ Marketing

- [HubSpot ↔ Salesforce](https://seamless.engineering/integrations/hubspot-salesforce/): HubSpot Salesforce integration
- [HubSpot ↔ Mailchimp](https://seamless.engineering/integrations/hubspot-mailchimp/): HubSpot Mailchimp integration
- [HubSpot ↔ Pipedrive](https://seamless.engineering/integrations/hubspot-pipedrive/): HubSpot Pipedrive integration
- [HubSpot ↔ Intercom](https://seamless.engineering/integrations/hubspot-intercom/): HubSpot Intercom integration

### Support ↔ ITSM & Dev

- [Zendesk ↔ HubSpot](https://seamless.engineering/integrations/zendesk-hubspot/): Zendesk HubSpot integration

### Accounting ↔ Finance

- [Xero ↔ HubSpot](https://seamless.engineering/integrations/xero-hubspot/): Xero HubSpot integration
- [HubSpot ↔ QuickBooks](https://seamless.engineering/integrations/hubspot-quickbooks/): HubSpot QuickBooks integration

## HubSpot API changelog

- [HubSpot API changelog](https://seamless.engineering/api-changelog/hubspot/): 8 breaking changes and 2 deprecations in the last 90 days

## Request a scoping call

Connecting HubSpot to something not listed here? Tell us which systems are involved and what data has to move. Fixed-price scoping quote within 48 hours.

- Email: hello@seamless.engineering
- Contact form: https://seamless.engineering/#contact