Build expense reports from email
The short answer
To build an expense report from email, forward your receipts — or auto-forward them as they land — to your Airbox address. Your own AI reads each receipt, including PDF and image attachments, and emails back a categorized expense report: vendor, date, amount, tax, and category per line, with a running total you can submit or paste into a spreadsheet.
How to do it
- Create a free Airbox address and connect your AI provider key.
- Forward your receipts, or auto-forward them to a dedicated expenses inbox.
- Ask for a report — “compile these into an expense report grouped by category with a total.”
Example
Subject: Fwd: Receipts — Q3 client trip (* @claude compile these receipts into an expense report: vendor, date, amount, tax, category, plus a total *) ---------- Forwarded message ---------- ...the email you forwarded...
Forward receipts together or one at a time, then ask Airbox to combine them into one report.
What you get
- A categorized report with vendor, date, amount, and tax per line
- A running total — and per-category subtotals if you ask
- Reads PDF and image receipts, not just text
- Pairs with digest mode for a weekly or monthly rollup
Frequently asked questions
- Can it combine receipts I forward over several days?
- Yes. Forward receipts to a dedicated expenses inbox as they arrive, then ask for a report covering a trip or period. With digest mode, Airbox can also send a scheduled rollup on its own.
- Will it match my company's expense categories?
- Yes — add a Context doc with your categories or report format and attach it to the inbox, and every report follows it.
- Do I have to forward each email by hand?
- No. Forward or BCC manually when you want, or set an auto-forwarding rule in Gmail, Outlook, or Apple Mail so matching mail reaches your Airbox address automatically and runs through your AI with no extra steps.
- How much does it cost?
- Airbox has a free plan to get started. You bring your own AI provider API key, so you pay the provider directly for the tokens you use — there is no AI markup from Airbox.
- Is it safe to point Airbox at my real email?
- Yes — that's exactly what Airbox is designed for. Airbox only acts on mail from senders you allow, and it only treats the subject and first body line (or a (* … *) block) as instructions. Everything else in a forwarded email is quarantined as untrusted content and never obeyed for your own security and privacy. Your API keys stay fully encrypted.
Ready to try it?
Get your private Airbox address and send your first AI-routed email in minutes. Free to start — bring your own AI.
