Comparison
Kauro and HubSpot's own import tool.
These do different jobs, and you use both. HubSpot's import tool loads a file you have prepared. Kauro prepares and verifies the file, then your team loads it with HubSpot's tool.
What HubSpot's import tool does and what Kauro does
| Aspect | HubSpot's import tool | Kauro |
|---|---|---|
| Job | Loads a file you prepared into your HubSpot account. | Checks, prepares and verifies the files; it never writes to your HubSpot account. |
| File formats and size | Accepts .csv, .xlsx and .xls with one sheet. Files up to 20 MB on the free tools and up to 512 MB on a paid subscription. | Reads CSV and XLSX exports, one object per file or worksheet. Its limits are on Supported services. |
| Duplicates | Matches records on unique identifiers, such as email for contacts and company domain name for companies, to update records instead of creating new ones. | Measures duplicate candidates across the whole set before the import and proposes groups to unify; your team approves each. |
| Before you commit | You prepare the file and run the import in your account. | A free data health check shows exact counts before any quote. The quote shows the price before you pay. |
| Import order and associations | You prepare the files, the mapping and the order of the imports; associations are matched on unique identifiers. | Delivers import files with their associations, importer settings and the order of the imports. |
When HubSpot's tool alone is enough
If your file is already clean and small, HubSpot's own import tool may be all you need. Kauro is for exports that need checking, duplicates to review, or an import you want prepared and verified first.
Where these facts come from
Read on the pages below on 4 November 2026. Vendors change their products and limits, so check the current page before you rely on a figure.
See what your own files hold
The free data health check counts duplicate candidates, invalid values and blockers on all of your data, and creates no obligation to buy.