# Should an Indian supplier share CBAM data through the Registry or by email?

Canonical: https://senseible.earth/answers/cbam-registry-vs-email-supplier-data-confidential

Through the CBAM Registry if you can. A registered operator uploads verified data once and declarants see only a summary. Without registration you must send your full emissions report and verification report to every buyer, and the Commission advises email only for non-confidential material unless encrypted.

## Registered in the Registry

- Upload installation and emissions data once in the O3CI portal.
- Share with each declarant who gives you its EORI number.
- Buyers see a summary, not your full report.

## Not registered

- Send each buyer the full report and the verifier's PDF report.
- Each buyer uploads them by hand when preparing its declaration.
- Your full data travels by email or file share.

## From 2027

The Registry is due to let operators share data with other producers who use their goods as precursors.

## What Senseible does here

Senseible reads an exporter's fuel and electricity invoices into dated, fingerprinted records that a monitoring plan and a verifier can trace back to source. Senseible does not verify emissions, register operators in the CBAM Registry or file CBAM declarations.

- [How a non-EU producer registers](https://senseible.earth/answers/how-non-eu-producer-registers-cbam-registry)
- [Producer will not share installation data](https://senseible.earth/answers/cbam-producer-will-not-share-installation-data)
- [Operator emissions report template](https://senseible.earth/answers/cbam-operator-emissions-report-template-mandatory)

Sources: [European Commission, CBAM Guidance No. 2, quick guide for non-EU operators (14 August 2026)](https://taxation-customs.ec.europa.eu/document/download/91e1056c-4524-4705-aaa7-e25c1439a87a_en?filename=Guidance%20No.%202%20-%20Quick%20guide%20for%20non-EU%20operators%20on%20CBAM%20implementation.pdf), [European Commission, CBAM Guidance No. 1, introduction to CBAM concepts (definitive period)](https://taxation-customs.ec.europa.eu/document/download/031abf60-21a9-4822-b258-ac8b111d8358_en?filename=Guidance%20No.%201%20-%20Introduction%20to%20CBAM%20concepts.pdf), [European Commission, CBAM Registry page](https://taxation-customs.ec.europa.eu/carbon-border-adjustment-mechanism/cbam-registry_en)

Last reviewed 2026-10-23.