EthanYoQ/Invoice-Downloader

Key features

• 01Reads invoice emails from QQ and 163 mailboxes over IMAP, in read-only mode.
• 02Filters mail through domain allowlists, subject keywords, body checks and QR code scanning.
• 03Recovers PDFs from download links on Baiwang, tax and other invoice platforms.
• 04Pairs hotel invoices with folios and taxi invoices with itineraries.
• 05Supports custom natural-language classification rules.
• 06Generates an Excel summary report of invoices and totals.

Use cases

• Collecting monthly e-invoices from email for personal expense reimbursement.
• Preparing invoice batches for a small team's finance review.
• Sorting travel receipts such as train, flight, hotel and taxi invoices by category.

Topics

FAQ

What is Invoice-Downloader?

Desktop tool that pulls e-invoices (PDF, OFD, XML) from QQ or 163 mailboxes, recognizes them with OCR and AI, sorts them into folders, and builds an Excel expense summary.

Is Invoice-Downloader free to use? What license does it have?

Invoice-Downloader is open source under the Apache-2.0 license. Check the license terms before using it in commercial products.

Is Invoice-Downloader still maintained?

Actively maintained. The last commit to Invoice-Downloader was on Sep 25, 2026.

What can I use Invoice-Downloader for?

Collecting monthly e-invoices from email for personal expense reimbursement. Preparing invoice batches for a small team's finance review. Sorting travel receipts such as train, flight, hotel and taxi invoices by category.

Where can I get Invoice-Downloader?

The source code and installation instructions are on GitHub: https://github.com/EthanYoQ/Invoice-Downloader