Outlook Processes Thousands of Emails a Month. AI Extracts the Invoices.
Authenticate through Microsoft Sign-In, and Inbox Ledger scans your entire Outlook or Office 365 mailbox — personal, business, or enterprise. Delta Query keeps subsequent syncs lightweight, pulling only new messages and reducing sync volume by 95%+. Shared and delegated mailbox support means your entire finance department is covered.
Key Outlook Invoice Scanner Capabilities
Built-in functionality that eliminates repetitive document tasks
Personal, Business & Enterprise Accounts
Compatible with Outlook.com, Microsoft 365 Business, and Enterprise tenants. Multi-tenant Azure AD configurations are fully supported out of the box.
Minimal-Scope Access
Authentication uses the official Microsoft OAuth flow with Mail.Read, User.Read, and offline_access scopes. Inbox Ledger has zero write access to your mailbox.
Delta Query for Efficient Sync
Microsoft Graph Delta Query returns only messages received since the last checkpoint — eliminating full rescans and reducing credit consumption by 95%+ after initial import.
15-Field Structured Output
Every attachment yields vendor name, invoice number, dates, currency, subtotal, tax, discounts, total, and per-line-item detail — with per-field confidence scoring for quick review.
Financial-Only Pre-Classifier
A lightweight AI model screens each attachment before extraction. Slide decks, marketing collateral, and images are discarded — only financial documents consume processing credits.
Shared & Delegated Mailbox Support
Connect accounts-payable@ or finance@ shared mailboxes alongside personal accounts. All extracted invoices appear in a single, role-secured dashboard.
Document Types Extracted from Outlook
AI identifies and extracts data from every supported format
Enterprise Vendor Invoices
B2B invoices from IT vendors, logistics providers, consulting firms, and professional service companies routed through corporate Outlook.
Cloud & SaaS Billing
Monthly statements from Azure, AWS, Google Cloud, Salesforce, and other enterprise platforms delivered directly to Outlook mailboxes.
Corporate Travel Receipts
Airline tickets, hotel folios, rental car invoices, and travel agency statements found in employee Outlook inboxes.
Procurement & Supply Orders
Purchase confirmations and invoices from Amazon Business, Staples, office supply vendors, and regional procurement platforms.
External Contractor Invoices
Invoices emailed by freelancers, consultants, and outsourced teams to your corporate Outlook accounts — in any format or language.
Facilities & Recurring Services
Monthly invoices for internet, telecom, building maintenance, cleaning services, and other recurring operational costs.
How It Works
From connection to first extracted invoice in under five minutes
Sign In with Microsoft
Click "Connect Outlook" and complete the Microsoft OAuth flow. Only the Mail.Read scope is requested — Inbox Ledger has no write or delete permissions.
Complete Mailbox Import
The initial scan retrieves your full Outlook history and pre-classifies every attachment. Financial documents are queued for extraction; everything else is discarded.
AI Extracts Invoice Fields
Each qualified document is processed for vendor, amounts, dates, tax, currency, and line items — returned as structured data with per-field confidence scores.
Review, Approve, and Route
Check extracted data in your dashboard, correct any edge cases, then export to QuickBooks, Xero, Google Sheets, Drive, or OneDrive.
Who Benefits Most
Designed for finance professionals and teams managing high-volume documents
Finance Directors
Connect every corporate Outlook mailbox — including shared and delegated accounts — and maintain a real-time invoice register without manual effort.
Accounts Payable Teams
Automate invoice intake across the finance department. Extracted data flows directly into your ERP or accounting software, cutting 8+ hours per week of data entry.
Independent Professionals
Freelancers and consultants using Outlook.com can track expense receipts and vendor invoices without switching email providers or filing attachments by hand.
See Outlook Invoice Scanner in Action
Set up in under 5 minutes and let AI handle the busywork.
Frequently Asked Questions
Inbox Ledger supports personal Outlook.com and Hotmail accounts, Microsoft 365 Business, and Microsoft 365 Enterprise — including multi-tenant Azure AD configurations. Any account accessible through the Microsoft Graph API is compatible.
Three scopes: Mail.Read (read email and attachments), User.Read (display your name), and offline_access (maintain the connection for background sync). No write, send, or delete permissions are requested.
Delta Query is a Microsoft Graph API capability that returns only messages created or modified since the last checkpoint. After the initial full import, each sync fetches only new emails — reducing volume by 95%+ and preserving processing credits.
Yes. Any shared or delegated Outlook mailbox you can authenticate is a valid source. Invoices from shared mailboxes are accessible to every member of your Inbox Ledger organization.
The Outlook scanner relies on the Microsoft Graph API, which requires Microsoft 365 or Exchange Online. For on-premises Exchange, use the IMAP Invoice Scanner — it connects to any IMAP-enabled mail server.
The initial scan processes your entire mailbox history available through the Microsoft Graph API. Depending on retention policies, this may include months or years of invoices. Delta Query handles all subsequent incremental updates.
There is no enforced limit. Personal accounts, team mailboxes, and shared inboxes can all be linked to the same organization. Each account syncs independently with its own Delta Query cursor.
You Might Also Need
Complementary tools that extend this capability