HubSpot Primary Company Association CSV Builder
Bulk-set the primary company association on HubSpot contacts by matching email domains or company names, without clicking through CRM records.
Match HubSpot contacts to their primary company by email domain or company name, locally in your browser. Only uniquely matched pairs are exported with HubSpot's Association label set to Primary; unmatched, duplicate, and missing-identifier rows are excluded for review.
HubSpot Primary Company workspace
Use Contacts as the main file and Companies as the lookup file. Only unique, fully identified pairs are exported with Association label = Primary.
Association results will appear here
Choose Contacts and Companies CSV files, confirm the match and identifier columns, then build the association file.
Bulk-set primary company associations on HubSpot contacts
- 1
Upload your HubSpot contacts export and companies export.
- 2
Choose the matching column (Email domain ↔ Company domain name, or Company name ↔ Company name).
- 3
Review matched, unmatched, and ambiguous pairs.
- 4
Download the association-ready CSV and import into HubSpot.
Built for the real task
- Email domain or company name matching
- Uniquely matched pairs only, with Primary label
- Unmatched and ambiguous rows surfaced for review
- Browser-local CSV processing
See the transformation
Two tables meet on one exact lookup key.
Add matching customer details to each order while keeping missing or repeated matches visible.
Browser limits
Files are limited to 10 MB to protect browser stability, especially on phones. Processing stays on this device.
Bulk-set the primary company association on HubSpot contacts by matching email domains or company names, without clicking through CRM records.
The selected file is not uploaded to Nablyx.
No. This tool reads and transforms the file locally in your browser.
Common uses
- Email domain or company name matching
- Uniquely matched pairs only, with Primary label
- Unmatched and ambiguous rows surfaced for review
- Browser-local CSV processing
Do I need a HubSpot token or API key?
No. The tool processes both CRM exports locally in your browser. No credentials are required or uploaded to Nablyx.
Related guide
Related tools
Continue with a related Nablyx tool.
- Join CSV files online freeJoin two CSV files on matching key columns, choose inner, left, or full results, and control duplicate lookup keys without uploading your data.
- CSV column mapper and renamerRename, reorder, and remove CSV columns before importing data into a CRM, store, database, or accounting system — without uploading your file.
- Validate CSV files online freeScan a CSV once for structural, encoding, header, delimiter, and whitespace problems without changing the file.
Ready to work on your file?
Return to the workspace and process it locally.