Fetch Gmail Label IDs Once

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": "Get Label IDs - Run Once",
  "active": false,
  "settings": {
    "executionOrder": "v1"
  },
  "tags": [],
  "nodes": [
    {
      "id": "h001",
      "name": "Manual Trigger",
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        200,
        300
      ],
      "parameters": {}
    },
    {
      "id": "h002",
      "name": "Fetch Label IDs",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4,
      "position": [
        450,
        300
      ],
      "credentials": {
        "oAuth2Api": {
          "name": "<your credential>"
        }
      },
      "parameters": {
        "url": "https://gmail.googleapis.com/gmail/v1/users/me/labels",
        "authentication": "oAuth2",
        "options": {}
      }
    },
    {
      "id": "h003",
      "name": "Show Custom Labels Only",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        700,
        300
      ],
      "parameters": {
        "mode": "runOnceForAllItems",
        "jsCode": "const resp = $input.first().json;\nconst labels = resp.labels || [];\n// Only show user-created labels (not system ones like INBOX, UNREAD)\nconst custom = labels.filter(l => l.type === 'user');\nreturn custom.map(l => ({ json: { name: l.name, id: l.id } }));\n"
      }
    }
  ],
  "connections": {
    "Manual Trigger": {
      "main": [
        [
          {
            "node": "Fetch Label IDs",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Fetch Label IDs": {
      "main": [
        [
          {
            "node": "Show Custom Labels Only",
            "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.

• oAuth2Api

About this workflow

Get Label IDs - Run Once. Uses httpRequest. Event-driven trigger; 3 nodes.

Source: https://github.com/odeliyach/CareerOS/blob/ab23d0ee28a9911877fffa68ae96cbcd6978270f/n8n-workflows/helper-get-label-ids.json — original creator credit. Request a take-down →

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