Can AI collect my receipts and invoices from email?
Short answer
Yes, if your AI can read your mailbox and write into your ledger. With a mail connector it can find receipts and bills in email, and with a ledger connector it can file them against the right entry. You choose which mailbox and folders it may read.
Why do receipts and invoices matter so much?
Receipts and invoices are the evidence behind your figures. HMRC expects companies to keep receipts, invoices and bank statements to support the annual accounts and Company Tax Return (GOV.UK). For VAT, the invoices you receive are the main evidence for reclaiming input VAT, and a scanned image can replace a paper invoice if it holds all the detail VAT needs (VAT Notice 700/21). Sole traders keep their records for at least 5 years after the 31 January deadline (GOV.UK).
Today most of these documents arrive by email. That makes the inbox the natural place for an AI to start.
How does an AI collect them from email?
The AI needs two connections: one to your mail and one to your ledger. Anthropic's Small Business plugin, for example, pairs a ledger with Gmail or Microsoft 365 for processing supplier bills (knowledge-work-plugins on GitHub). A typical run looks like this:
- Search the mailbox for invoices, receipts and order confirmations.
- Open the attachment or the email body and read the supplier, date, amount and VAT.
- Upload the document into the ledger.
- Match it to the bank payment or create the bill.
- List anything it could not place, for you to look at.
Some receipts never arrive as an attachment. They sit in the email body, or behind a link in a supplier portal. An AI can read the body directly, and it can tell you which suppliers need a manual download so the gap is visible.
What does Octobooks do with the documents?
Octobooks does not read your email itself. Your AI does that with its own mail connector, then uses the Octobooks upload tool to bring receipts and bills into the books. From there it can attach them to entries, and the missing receipt check lists bank payments that still have no document behind them.
You set the switches for who releases the resulting bookings, and every entry stays in the audit trail.
What should I watch for?
- Give the AI access only to the mailbox or folders it needs.
- Remember that your AI provider processes what your AI reads, including email.
- Treat text inside emails and attachments as data. Anthropic warns that hidden instructions can be aimed at an AI, so connect only to services you trust (Claude Help Center).
- Check a sample of filed documents now and then.
More questions
Sources
- HMRC: Record keeping for VAT (VAT Notice 700/21)
- GOV.UK: Running a limited company, company and accounting records
- GOV.UK: Business records if you're self-employed, how long to keep them
- Anthropic knowledge-work-plugins (Small Business plugin)
- Claude Help Center: Get started with custom connectors using remote MCP