Automatically create invoices from Gmail labels with GPT-4O + QuickBooks
What It Does This workflow reads Gmail threads labeled Invoice Needed, extracts invoice and client details using an AI agent, and creates a draft invoice in QuickBooks Online. It then downloads the invoice as a PDF an...
Template notes
What It Does This workflow reads Gmail threads labeled Invoice Needed, extracts invoice and client details using an AI agent, and creates a draft invoice in QuickBooks Online. It then downloads the invoice as a PDF and drafts a reply email with the invoice attached — all automatically.
Perfect for freelancers, agencies, or small businesses looking to streamline client billing from email.
Prerequisites To use this workflow, you’ll need:
- A Gmail OAuth2 credential - A QuickBooks OAuth2 credential - An OpenAI credential (for AI-powered data extraction)
How to Label Threads - In Gmail, apply the label Invoice Needed to any email thread that contains details for an invoice request. - The workflow will process only those threads.
How It Works 1. Trigger: The workflow runs on a schedule (e.g., every hour) 2. Fetch Emails: Gmail node pulls all threads with the Invoice Needed label 3. Group Messages: Emails in each thread are grouped together 4. AI Extraction: An OpenAI-powered agent extracts client info, billing address, invoice amount, and description 5. Add a New Client: This node will attempt to create a new client in QuickBooks 6. Find Existing Client If the client already exists, this node will find the client's id 7. Create Invoice: An invoice is created based on the extracted details 8. Download PDF: The invoice is saved as a PDF 9. Draft Reply: A Gmail draft is created with a template message and the invoice attached 10. Remove Label: The processed thread is untagged to avoid duplicates
Example Use Cases - Automatically generate invoices from client emails - Use AI to extract invoice data without manual input - Ensure consistent and timely billing - Create a paper trail with attached PDFs in replies - Free up your inbox by processing and clearing labeled threads
How to Use - Set your schedule (e.g., every hour or more often if needed) - Select a product in the Create A New Invoice node - Ask the client to provide invoice details if needed (company name, billing address) - Add the Invoice Needed label to threads manually, via a Gmail filter or via another workflow - Review and send the drafted replies in Gmail - Optionally, add your branding or custom template to the email message