Automate Invoice Approval with Gmail & Google Gemini AI

Automate Invoice Approval with Gmail & Google Gemini AI

Unlock seamless invoice processing with our cutting-edge n8n workflow that automates invoice approval directly from your Gmail. Using Google Gemini AI to extract crucial details, this workflow accelerates decision-making by auto-approving small invoices and routing more significant ones to management, ensuring every step is precise and efficient.

What this workflow does

• Monitor incoming invoices: A Gmail Trigger keeps an eye out for emails with "invoice" in the subject and attachments, ensuring you're ready to process as soon as they arrive.
• Extract essential data: Google Gemini AI reads each invoice attachment, pulling key information such as vendor details, invoice number, amount, currency, due date, and a line-item summary, all formatted into structured JSON.
• Data normalization: A Code node organizes the extracted data, converting amounts and dates into standard formats and attaching the email sender's information for complete records.
• Smart routing: With a Switch node, invoices under $500 are auto-approved, those ranging from $501 to $5,000 are sent to a manager, and invoices exceeding $5,000 require both managerial and financial approval.
• Approval process: Utilize Send-and-Wait buttons in approval emails to pause and await a decision for up to 48 hours before proceeding.
• Logging outcomes: Every decision made is recorded in Google Sheets, ensuring transparency, and the submitter is promptly informed of the outcome via email.

Use cases

• Small Business Owner: Streamline your invoice processing, granting you more time to focus on scaling your business rather than administrative tasks.
• SaaS Finance Teams: Automatically manage incoming invoices with tailored approval workflows, reducing manual errors and boosting efficiency.
• Automation Engineers: Deploy a pre-built, highly efficient workflow to manage invoice approvals, freeing you to concentrate on more complex challenges.

Technical details

• Integrations: Gmail, Google Gemini AI, Google Sheets
• Key nodes used: Gmail Trigger, Google Gemini, Code, Switch, Send-and-Wait
• Other tools: Sticky Note for easy customization and notes