Log Expense Emails To Sheets
Automatically captures receipt and invoice emails from Gmail and logs key expense details like date, vendor, and amount into a Google Sheets spreadsheet.
Automated Expense Logger
This workflow automatically captures receipt, invoice, or trip-related emails from your Gmail inbox and logs key expense details into a Google Sheets spreadsheet. It saves you from manual data entry by extracting the date, vendor name, and transaction amount using AI.
It does three things:
- Watches your Gmail inbox for new emails with subjects containing "receipt," "invoice," or "your trip."
- Uses an AI agent to scan the email text and extract the transaction date, vendor, and total amount.
- Appends these extracted details as a new row in a predefined Google Sheets spreadsheet.
Who It's For
This workflow is ideal for freelancers, agency owners, and startup founders who want to streamline bookkeeping without spending time on manual data entry.
What You Need
- A Gmail account with API access connected to Needle.
- A Google Sheets account connected to Needle with permission to edit the target spreadsheet.
- The Google Sheets spreadsheet ID (you'll need to replace the placeholder
<spreadsheet-id>in the AI agent node with your actual spreadsheet ID).
How the Flow Works
| Node | Description |
|---|---|
| Gmail Trigger | Watches for new incoming emails matching subject keywords like "receipt," "invoice," or "your trip." It outputs the email's subject, sender, and full plain text body. |
| AI Bookkeeper Agent | Parses the email content using an AI model and extracts the transaction date (YYYY-MM-DD), vendor name, and total amount charged. If the amount isn't clearly identified, it logs "NEEDS MANUAL REVIEW." It then appends this data as a new row in the configured Google Sheets spreadsheet. |
Output
At the end, you get a continuously updated Google Sheets spreadsheet where each new receipt or invoice email adds a row with the following fields:
| Column | Data |
|---|---|
| A | Transaction Date (YYYY-MM-DD) |
| B | Vendor Name |
| C | Total Amount |
This creates an automatic, easy-to-review expense log without any manual typing.
Notes
- The Gmail search query can be customized to cover additional keywords like "order" or "payment" if you want broader email coverage.
- If you want to track categories or other fields, you can enhance the AI prompt to extract and log those as well.
- Allow 30–60 seconds after a receipt email arrives in your Gmail for the workflow to trigger and update the sheet.
- Keep the Google Sheets spreadsheet accessible and avoid changing its structure to maintain smooth automation.
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