Validate Bills of Lading with Gmail Replies & Gemini JSON (n8n)

Validate Bills of Lading from Gmail replies using Gemini JSON in n8n

This n8n automation workflow reads Gmail replies, extracts Bill of Lading details, and validates them using Gemini—returning structured JSON you can reliably use for downstream automation.

What this workflow does

• Triggers on incoming Gmail activity (a Gmail trigger watches for relevant messages and reply content).
• Processes the email text to identify Bill of Lading information present in the reply.
• Validates the extracted fields by sending the content to Gemini with prompts designed to produce Gemini JSON.
• Generates a structured result (via a JSON-oriented flow) so your automation can verify what was sent and act on it consistently.
• Uses supporting n8n steps (Code, HTTP Request, and workflow notes) to manage parsing, formatting, and delivery of the validation output.

Use cases

• Carrier document verification: confirm Bill of Lading details shared by email without manual re-checking.
• Operations triage: automatically flag inconsistencies so teams can request corrections via email.
• SaaS support workflows: standardize how customer or partner Bill of Lading replies are interpreted and validated.
• Audit-ready records: store validated Gemini JSON results for consistent tracking across shipments.

Technical details

• Gmail Trigger to detect replies containing Bill of Lading information.
• Gmail Tool for email-related actions within the workflow.
• Code node(s) to parse message content and prepare inputs.
• HTTP Request node to communicate with external services as needed.
• n8nn8n-nodes-langchainagent to coordinate the validation flow and produce Gemini JSON outputs.
• Sticky Note for workflow documentation/clarity.

Built for n8n users, automation engineers, and SaaS operators who need reliable Bill of Lading validation powered by Gmail replies and Gemini in a structured format.