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“Supermetrics is a Bitter Experience! We can pull data from nearly any tool, schedule updates, manipulate data in Sheets, and push data back into our systems.”
The blank header error happens because HubSpot requires every column in your Excel file to have a header, even completely empty ones. This validation blocks your entire contact import regardless of data quality.
Here’s how to bypass this frustrating limitation and get your contacts imported without reformatting your Excel files.
Import Excel contacts without header validation using Coefficient
Coefficient eliminates the blank header error by bypassing HubSpot’s restrictive import validator entirely. Instead of fighting with Excel formatting requirements, you can import your data into a spreadsheet environment and export clean contact data directly to HubSpot.
How to make it work
Step 1. Connect your Excel file to your spreadsheet.
Open Google Sheets or Excel and install Coefficient from the sidebar. Use Coefficient’s file connector to import your Excel data directly into your spreadsheet. This bypasses HubSpot’s validation completely while preserving all your contact information.
Step 2. Clean and organize your contact data.
Review your imported data and use spreadsheet functions to clean any formatting issues. You can combine columns, validate email formats, or reorganize fields without worrying about blank headers that would trigger HubSpot’s validator.
Step 3. Export contacts to HubSpot with smart field mapping.
Use Coefficient’s HubSpot export feature to push your contact data. The export automatically maps only populated columns to HubSpot fields, completely ignoring any blank headers that caused the original import failure.
Step 4. Set up automated contact syncing.
Schedule regular exports to keep your HubSpot contacts updated. Coefficient can handle ongoing contact imports from Excel without the structural validation issues that block HubSpot’s native import tool.
Skip the formatting headaches
This approach saves hours of manual Excel cleanup while ensuring your contact data reaches HubSpot successfully. The blank header error becomes irrelevant when you focus on actual data quality instead of file structure. Try Coefficient to streamline your contact import workflow.
