Docflow 01 - Gmail Intake

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": "DocFlow 01 - Gmail Intake",
  "nodes": [
    {
      "parameters": {
        "pollTimes": {
          "item": [
            {
              "mode": "everyMinute"
            }
          ]
        },
        "filters": {
          "q": "has:attachment filename:(pdf OR docx) -in:trash"
        },
        "options": {
          "downloadAttachments": true
        }
      },
      "id": "trigger-01",
      "name": "Gmail Trigger",
      "type": "n8n-nodes-base.gmailTrigger",
      "typeVersion": 1.2,
      "position": [
        240,
        300
      ],
      "credentials": {
        "gmailOAuth2": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "typeValidation": "strict",
            "leftValue": ""
          },
          "conditions": [
            {
              "id": "has-binary",
              "leftValue": "={{ Object.keys($binary || {}).length }}",
              "rightValue": 0,
              "operator": {
                "type": "number",
                "operation": "gt"
              }
            }
          ],
          "combinator": "and"
        },
        "options": {}
      },
      "id": "filter-01",
      "name": "Has Attachment?",
      "type": "n8n-nodes-base.if",
      "typeVersion": 2,
      "position": [
        460,
        300
      ]
    },
    {
      "parameters": {
        "operation": "extractFromFile",
        "binaryPropertyName": "={{ Object.keys($binary)[0] }}",
        "options": {}
      },
      "id": "extract-01",
      "name": "Extract Text",
      "type": "n8n-nodes-base.extractFromFile",
      "typeVersion": 1,
      "position": [
        680,
        300
      ]
    },
    {
      "parameters": {
        "jsCode": "const item = $input.first();\nconst meta = $('Gmail Trigger').first().json;\nconst binaryKey = Object.keys(item.binary || {})[0];\nconst binMeta = item.binary?.[binaryKey] || {};\nconst raw_text = item.json.text || item.json.data || '';\n\n// Load client config from a static file via Code-node fs is not available; in production, fetch from a Workflow Variable or external store.\n// For now, load a default config inline. Replace with your client config loader.\nconst clientConfig = {\n  client_id: 'moamen',\n  thresholds: { min_text_length: 50, classify_min_confidence: 0.7, extract_min_confidence: 0.8 },\n  destinations: { invoices: { spreadsheet_id: '1JxBDiQbPqP4_9VYIatAhNldQX30Hpz_rwjr7BfK9Odo', tab: 'invoices', review_tab: 'review_queue' }, contracts: { database_id: '096266c29be944d5958fc59e08c99605' } },\n  forms: { destination: { kind: 'sheets', spreadsheet_id: '1JxBDiQbPqP4_9VYIatAhNldQX30Hpz_rwjr7BfK9Odo', tab: 'forms' }, fields: [] },\n  telegram: { chat_id: 'REPLACE_WITH_TELEGRAM_CHAT_ID' }\n};\n\nconst envelope = {\n  doc_id: crypto.randomUUID(),\n  received_at: new Date().toISOString(),\n  source: 'gmail',\n  source_meta: {\n    email_id: meta.id || '',\n    email_from: meta.from || meta.headers?.from || '',\n    filename: binMeta.fileName || '',\n    drive_file_link: ''\n  },\n  client_id: clientConfig.client_id,\n  client_config: clientConfig,\n  raw_text\n};\nreturn [{ json: envelope }];"
      },
      "id": "build-env-01",
      "name": "Build Envelope",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        900,
        300
      ]
    },
    {
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "typeValidation": "strict",
            "leftValue": ""
          },
          "conditions": [
            {
              "id": "text-len-gate",
              "leftValue": "={{ ($json.raw_text || '').length }}",
              "rightValue": "={{ $json.client_config?.thresholds?.min_text_length ?? 50 }}",
              "operator": {
                "type": "number",
                "operation": "gte"
              }
            }
          ],
          "combinator": "and"
        },
        "options": {}
      },
      "id": "len-gate-01",
      "name": "Text Length Gate",
      "type": "n8n-nodes-base.if",
      "typeVersion": 2,
      "position": [
        1120,
        300
      ]
    },
    {
      "parameters": {
        "workflowId": {
          "__rl": true,
          "value": "REPLACE_WITH_WORKFLOW_03_ID",
          "mode": "id"
        },
        "options": {}
      },
      "id": "call-03",
      "name": "Call Classifier",
      "type": "n8n-nodes-base.executeWorkflow",
      "typeVersion": 1.2,
      "position": [
        1340,
        200
      ]
    },
    {
      "parameters": {
        "jsCode": "const env = $input.first().json;\nenv.review_reason = 'low_text';\nreturn [{ json: env }];"
      },
      "id": "tag-low-text-01",
      "name": "Tag Low Text",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        1340,
        400
      ]
    },
    {
      "parameters": {
        "workflowId": {
          "__rl": true,
          "value": "REPLACE_WITH_WORKFLOW_07_ID",
          "mode": "id"
        },
        "options": {}
      },
      "id": "call-07-from-01",
      "name": "Route to Review",
      "type": "n8n-nodes-base.executeWorkflow",
      "typeVersion": 1.2,
      "position": [
        1560,
        400
      ]
    }
  ],
  "connections": {
    "Gmail Trigger": {
      "main": [
        [
          {
            "node": "Has Attachment?",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Has Attachment?": {
      "main": [
        [
          {
            "node": "Extract Text",
            "type": "main",
            "index": 0
          }
        ],
        []
      ]
    },
    "Extract Text": {
      "main": [
        [
          {
            "node": "Build Envelope",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Build Envelope": {
      "main": [
        [
          {
            "node": "Text Length Gate",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Text Length Gate": {
      "main": [
        [
          {
            "node": "Call Classifier",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Tag Low Text",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Tag Low Text": {
      "main": [
        [
          {
            "node": "Route to Review",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": false,
  "settings": {
    "executionOrder": "v1"
  },
  "tags": [
    {
      "name": "docflow"
    }
  ]
}

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

About this workflow

DocFlow 01 - Gmail Intake. Uses gmailTrigger. Event-driven trigger; 8 nodes.

Source: https://github.com/Moamen-Elsharkawy/docflow-ai/blob/main/n8n-exports/01-gmail-intake.json — original creator credit. Request a take-down →

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