Sumday Alternative for AI Scope 3 Automation | ESGAgent vs Sumday
Sumday alternative

Sumday helps you reconcile emissions.
ESGAgent does the reconciling for you.

Sumday turns general ledger transactions into emissions, with AI suggestions you or your accountant review and reconcile. ESGAgent is AI native: send spreadsheets, invoices, scanned bills and phone photos on top of your ERP feed, and Scope 1, 2 and 3 are calculated, mapped and evidenced for you.

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Sumday is built for
Accountants, advisors and small to mid-sized businesses that want emissions estimated from the general ledger.
ESGAgent is built for
Teams that want the most accurate Scope 1, 2 and 3 possible. ESGAgent connects to your ERP and source systems, then goes further, ingesting spreadsheets, invoices, scans and photos so no activity data is left out.
Head to head on Scope 1, 2 and 3

ESGAgent vs Sumday, line by line.

Sumday
ESGAgent
What you can send
General ledger transactions
✓Spreadsheets, PDFs, invoices, scans and phone photos, plus ERP and accounting data
System integrations
Xero and Pronto Xi
✓ERP, accounting, fuel systems, utility portals and lab systems
Invoices, bills and photos
Not found on public site
✓Read and extracted automatically, including scans and phone photos of dockets and bills
Scope 3 method
Ledger-based, with supplier data collection
✓Activity data pulled from your documents wherever it exists, spend-based only to fill gaps
Who does the mapping
AI suggestions you or your accountant review and reconcile
✓Agents classify, extract and map every line to an emission factor. You approve the exceptions
Audit trail
Transactions traced through the ledger
✓Every figure traces back to the document it came from
Methodology and boundaries
You or your accountant, trained through Sumday Academy
✓Set and maintained by our forward deployed engineers, not your team

“Not found” and “not detailed” mean we could not find it on Sumday’s website or public listings in September 2026. Sources are listed at the end of this page.

The trade-offs

Where Sumday falls short.

–Emissions start from the general ledger, which records dollars spent, not litres, kilowatt-hours or tonnes.
–AI suggestions still have to be reviewed and reconciled by you or your accountant, transaction by transaction.
–The product and its training are designed for accountants, so the carbon work stays with people, not software.
Sumday may still suit you if
You are a smaller business, your accountant will run carbon reporting, and your emissions can be estimated from the ledger.
Where we differ

Scope 3, AI native.

01
Send it as it is.
Spreadsheets, PDF invoices, scanned bills, phone photos of fuel dockets and supplier files go in alongside your ERP feed. No templates to fill in and no data cleaning first.
02
Scope 1, 2 and 3, fully automated.
Agents read every document, classify each line, pick the emission factor and run the calculation. You review exceptions, not rows.
03
Someone else owns the method.
Our forward deployed engineers set your boundaries and methodology once and keep them current, so nobody on your team has to become a carbon accountant. See CarbonAgent
Questions

Switching from Sumday, answered.

Is ESGAgent an alternative to Sumday?

Yes. ESGAgent calculates Scope 1, 2 and 3 emissions and prepares AASB S2 disclosures. The difference is the input: you can send spreadsheets, invoices, scans and photos as they are, and the extraction, factor mapping and calculations are automated.

Can Sumday read invoices, bills and photos?

Sumday works from general ledger transactions. We could not find document or image ingestion on its public website as of September 2026.

Who is Sumday a better fit for?

Accounting firms offering carbon services, and small businesses on Xero or Pronto whose emissions can be estimated from ledger transactions.

What do we need to send ESGAgent?

Whatever you already have. ERP and accounting exports, fuel and utility data, supplier spreadsheets, PDF invoices, scanned dockets and phone photos. Agents read and classify each item, and our engineers set the boundaries and methodology with you once.

More comparisons
ESGAgent vs Avarni ESGAgent vs Unravel Carbon ESGAgent vs Trace
Sources, checked September 2026: Sumday on the Xero App Store · Sumday and Pronto · Accounting Times on Sumday. Sumday is a trademark of its owner. Spotted something out of date? Tell us and we will correct it.

Bring your messiest spreadsheet.
Watch Scope 3 calculate itself.

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