Gmail → Supabase AI Email Parser

The workflow JSON

Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →

{
  "name": "Santander Email to Supabase",
  "nodes": [
    {
      "parameters": {
        "pollInterval": "10m"
      },
      "name": "Gmail Trigger",
      "type": "n8n-nodes-base.gmailTrigger",
      "typeVersion": 1,
      "position": [
        250,
        300
      ],
      "credentials": {
        "gmailOAuth2": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "prompt": "Analyze the email body and extract the transaction details.\nReturn a JSON with:\n- amount (number, negative for expenses)\n- description (string, merchant or concept)\n- date (YYYY-MM-DD)\n- category (guess based on description: 'materials', 'services', 'taxes', 'other')\n\nEmail Body:\n{{$json.snippet}}",
        "options": {}
      },
      "name": "AI Parser (Gemini/OpenAI)",
      "type": "n8n-nodes-base.openAi",
      "typeVersion": 1,
      "position": [
        450,
        300
      ],
      "credentials": {
        "openAiApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "table": "transactions",
        "columns": "amount, description, date, category, source",
        "schema": "public"
      },
      "name": "Supabase Writer",
      "type": "n8n-nodes-base.supabase",
      "typeVersion": 1,
      "position": [
        650,
        300
      ],
      "credentials": {
        "supabaseApi": {
          "name": "<your credential>"
        }
      }
    }
  ],
  "connections": {
    "Gmail Trigger": {
      "main": [
        [
          {
            "node": "AI Parser (Gemini/OpenAI)",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "AI Parser (Gemini/OpenAI)": {
      "main": [
        [
          {
            "node": "Supabase Writer",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}

Credentials you'll need

Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.

• gmailOAuth2
• openAiApi
• supabaseApi

About this workflow

Santander Email to Supabase. Uses gmailTrigger, openAi, supabase. Event-driven trigger; 3 nodes.

Source: https://github.com/manager-estimator/meraki-control-panel/blob/9fb4183fc532f57e1fa1995e581f78f1c0cd03c1/n8n/bank_email_workflow.json — original creator credit. Request a take-down →

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