AI Email Responder Agent

The workflow JSON

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{
  "name": "AI Email Responder Agent",
  "nodes": [
    {
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "leftValue": "",
            "typeValidation": "strict",
            "version": 3
          },
          "conditions": [
            {
              "id": "fddd4b17-0929-4068-a459-bf8907f15644",
              "leftValue": "={{ Object.keys($binary || {}).length }}",
              "rightValue": 0,
              "operator": {
                "type": "number",
                "operation": "gt"
              }
            }
          ],
          "combinator": "and"
        },
        "options": {}
      },
      "type": "n8n-nodes-base.if",
      "typeVersion": 2.3,
      "position": [
        -128,
        32
      ],
      "id": "76ae8569-2ffe-4917-a450-fc9794b40e0f",
      "name": "If"
    },
    {
      "parameters": {
        "assignments": {
          "assignments": [
            {
              "id": "cfa3bda8-ca3b-48c1-96f1-1bf44218118d",
              "name": "ID",
              "value": "={{ $json.threadId }}",
              "type": "string"
            },
            {
              "id": "5f33cc7d-797e-4211-956e-b34ac3d77d78",
              "name": "Name",
              "value": "={{ $json.from.value[0].name }}",
              "type": "string"
            },
            {
              "id": "60f046a7-4f0f-43d3-a122-e558b9f594c9",
              "name": "From",
              "value": "={{ $json.from.value[0].address }}",
              "type": "string"
            },
            {
              "id": "19672cb6-c27a-4b51-b9ad-2289183d6824",
              "name": "Subject",
              "value": "={{ $json.subject }}",
              "type": "string"
            },
            {
              "id": "2fb99f07-8e9a-49ed-a0e5-136d35ac2350",
              "name": "Body",
              "value": "={{ $json.text }}",
              "type": "string"
            }
          ]
        },
        "options": {}
      },
      "type": "n8n-nodes-base.set",
      "typeVersion": 3.4,
      "position": [
        -64,
        304
      ],
      "id": "75eb88cc-46b4-435b-be9e-c867e27b91c7",
      "name": "Edit Fields 02",
      "notesInFlow": false
    },
    {
      "parameters": {
        "assignments": {
          "assignments": [
            {
              "id": "cfa3bda8-ca3b-48c1-96f1-1bf44218118d",
              "name": "ID",
              "value": "={{ $json.threadId }}",
              "type": "string"
            },
            {
              "id": "5f33cc7d-797e-4211-956e-b34ac3d77d78",
              "name": "Name",
              "value": "={{ $json.from.value[0].name }}",
              "type": "string"
            },
            {
              "id": "60f046a7-4f0f-43d3-a122-e558b9f594c9",
              "name": "From",
              "value": "={{ $json.from.value[0].address }}",
              "type": "string"
            },
            {
              "id": "19672cb6-c27a-4b51-b9ad-2289183d6824",
              "name": "Subject",
              "value": "={{ $json.subject }}",
              "type": "string"
            },
            {
              "id": "2fb99f07-8e9a-49ed-a0e5-136d35ac2350",
              "name": "Body",
              "value": "={{ $json.text }}",
              "type": "string"
            },
            {
              "id": "3a4f5060-199d-43f0-958a-2357dd17d4f5",
              "name": "Attachment",
              "value": "=attachment_0",
              "type": "binary"
            }
          ]
        },
        "options": {}
      },
      "type": "n8n-nodes-base.set",
      "typeVersion": 3.4,
      "position": [
        -144,
        -176
      ],
      "id": "26baaa2e-a7f5-455d-8864-66fdaccb3225",
      "name": "Edit Fields 01",
      "notesInFlow": false
    },
    {
      "parameters": {
        "rule": {
          "interval": [
            {
              "field": "hours"
            }
          ]
        }
      },
      "type": "n8n-nodes-base.scheduleTrigger",
      "typeVersion": 1.3,
      "position": [
        -640,
        32
      ],
      "id": "03e65f46-513a-43b6-8d4b-a781dc5fa31e",
      "name": "Schedule Every 1H"
    },
    {
      "parameters": {
        "operation": "getAll",
        "returnAll": true,
        "simple": false,
        "filters": {
          "readStatus": "unread",
          "receivedAfter": "2026-03-14T00:00:00"
        },
        "options": {
          "downloadAttachments": true
        }
      },
      "type": "n8n-nodes-base.gmail",
      "typeVersion": 2.2,
      "position": [
        -384,
        32
      ],
      "id": "4bb99020-640c-4a61-b952-aa198c4c67e9",
      "name": "Get  Messages",
      "credentials": {
        "gmailOAuth2": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "promptType": "define",
        "text": "=\"You are an expert Email Classifier for. Your task is to analyze the following email and its attached files to determine the sender's intent.\n\nInstructions:\nRead the Email Subject and Body carefully.\nAnalyze the content of the provided attachments (e.g., PDFs, Images, or Documents).\nCategorize the request into EXACTLY ONE of the following categories:\nPromotion: If a brand wants the customer to promote their products.\nMeetings: If someone wants to schedule a meeting or call.\nCollaboration: If someone wants to partner or work together on a project.\nInquiry: If someone is asking a question or seeking information.\n\nInput Data:\n\nSubject: {{ $json.Subject }}\n\nBody: {{ $json.Body }}\n\nAttachment Content:  [The AI should analyze the binary files mapped to this node]\n\n\nConstraint: Output ONLY the category name. Do not include any explanation or punctuation.",
        "options": {}
      },
      "type": "@n8n/n8n-nodes-langchain.agent",
      "typeVersion": 3.1,
      "position": [
        336,
        -288
      ],
      "id": "cb9c31f0-1de4-4ae8-92a2-5d4bde77dc22",
      "name": "AI Brain 01"
    },
    {
      "parameters": {
        "promptType": "define",
        "text": "=You are an expert Email Classifier for. Your task is to analyze the following email text to determine the sender's intent.\n\nInstructions:\nRead the Email Subject and Body carefully.\nCategorize the request into EXACTLY ONE of the following categories:\nPromotion: If a brand wants the customer to promote their products.\nMeetings: If someone wants to schedule a meeting or call.\nCollaboration: If someone wants to partner or work together on a project.\nInquiry: If someone is asking a question or seeking information.\n\nInput Data:\n\nSubject: {{ $json.Subject }}\n\nBody: {{ $json.Body }}\n\nConstraint: Output ONLY the category name. Do not include any explanation or punctuation.",
        "options": {}
      },
      "type": "@n8n/n8n-nodes-langchain.agent",
      "typeVersion": 3.1,
      "position": [
        400,
        96
      ],
      "id": "9ff65258-3f7c-4d1a-9a2c-9046ba928a5f",
      "name": "AI Brain 02"
    },
    {
      "parameters": {},
      "type": "n8n-nodes-base.noOp",
      "name": "Replace Me",
      "typeVersion": 1,
      "position": [
        112,
        -304
      ],
      "id": "a1598e8d-4351-4c36-994e-abf845c8a3e5",
      "placeholder": true
    },
    {
      "parameters": {
        "options": {}
      },
      "type": "n8n-nodes-base.splitInBatches",
      "typeVersion": 3,
      "position": [
        224,
        -176
      ],
      "id": "255e9cad-b583-41aa-ab42-a798b29500ae",
      "name": "loop 01"
    },
    {
      "parameters": {},
      "type": "n8n-nodes-base.noOp",
      "name": "Replace Me1",
      "typeVersion": 1,
      "position": [
        128,
        320
      ],
      "id": "90ec9160-8d8f-4606-b23a-fa6bff13654c",
      "placeholder": true
    },
    {
      "parameters": {
        "options": {}
      },
      "type": "n8n-nodes-base.splitInBatches",
      "typeVersion": 3,
      "position": [
        64,
        112
      ],
      "id": "4d22e905-1b36-486d-b344-a5e60db29749",
      "name": "Loop 02"
    },
    {
      "parameters": {
        "model": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-5-mini"
        },
        "builtInTools": {},
        "options": {}
      },
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "typeVersion": 1.3,
      "position": [
        336,
        -64
      ],
      "id": "f6b9652c-c5b9-455f-8d5d-61346215ab3b",
      "name": "Email Analysis 01",
      "credentials": {
        "openAiApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {},
      "type": "n8n-nodes-base.merge",
      "typeVersion": 3.2,
      "position": [
        576,
        -64
      ],
      "id": "de0911aa-4746-4bee-b127-b0afef07dc1d",
      "name": "Merge"
    },
    {
      "parameters": {
        "promptType": "define",
        "text": "=You are a Professional AI Email Assistant for \"AutomateIQ Labs\". Your task is to write a polite and professional reply to an email based on its assigned category.\n\nContext:\n- Sender Name: {{ $('Get  Messages').item.json.from.value[0].name }}\n\n- Email Subject: {{ $('Get  Messages').item.json.text }}\n\n- Assigned Category: {{ $json.output }}\n\n\nInstructions for Reply Content:\nBased on the \"Assigned Category\", follow these specific rules for the reply:\n\n1. If Category is \"Promotion\":\n   Reply: \"Thank you for reaching out. I have received your promotion request. I am interested in hearing more and will contact you very soon to discuss the details.\"\n\n2. If Category is \"Inquiry\":\n   Reply: \"Thank you for your email. I have understood your question and what you would like to know. I am looking into it and will get back to you shortly with more information.\"\n\n3. If Category is \"Meetings\":\n   Reply: \"Thank you for the invitation. I am definitely interested in a meeting. I will contact you soon to fix a suitable date and time for our discussion.\"\n\n4. If Category is \"Collaboration\":\n   Reply: \"Thank you for your collaboration request. I have received the details and will carefully consider everything. I will send you a follow-up email once I have reviewed it.\"\n\nGuidelines:\n- Maintain a professional, helpful, and friendly tone.\n- Start with a proper greeting (e.g., \"Hello [Sender Name]\").\n- End with a professional sign-off (e.g., \"Best regards, AutomateIQ Labs Team\").\n- Output ONLY the final reply text. Do not add any extra explanations or notes.",
        "options": {}
      },
      "type": "@n8n/n8n-nodes-langchain.agent",
      "typeVersion": 3.1,
      "position": [
        688,
        256
      ],
      "id": "964eaa6d-8856-4a12-ba0f-7a096ad1cc58",
      "name": "AI Brain 03"
    },
    {
      "parameters": {
        "model": {
          "__rl": true,
          "value": "gpt-4o-mini",
          "mode": "list",
          "cachedResultName": "gpt-4o-mini"
        },
        "builtInTools": {},
        "options": {}
      },
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "typeVersion": 1.3,
      "position": [
        688,
        464
      ],
      "id": "dabc041b-c20c-4508-9e80-d466f9a8dbb2",
      "name": "Email Responder",
      "credentials": {
        "openAiApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "operation": "reply",
        "messageId": "={{ $('Get  Messages').item.json.threadId }}",
        "emailType": "text",
        "message": "={{ $json.output }}",
        "options": {}
      },
      "type": "n8n-nodes-base.gmail",
      "typeVersion": 2.2,
      "position": [
        848,
        32
      ],
      "id": "36f9f4f7-e96d-4e3a-bb14-e4fb5c894821",
      "name": "Reply to a message",
      "credentials": {
        "gmailOAuth2": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "operation": "create",
        "base": {
          "__rl": true,
          "value": "appO2zbe7rH1rubVp",
          "mode": "list",
          "cachedResultName": "Email Data test",
          "cachedResultUrl": "https://airtable.com/appO2zbe7rH1rubVp"
        },
        "table": {
          "__rl": true,
          "value": "tblHefbZudEoLG7kg",
          "mode": "list",
          "cachedResultName": "Table 1",
          "cachedResultUrl": "https://airtable.com/appO2zbe7rH1rubVp/tblHefbZudEoLG7kg"
        },
        "columns": {
          "mappingMode": "defineBelow",
          "value": {
            "Name": "={{ $('Get  Messages').item.json.from.value[0].name }}",
            "Email": "={{ $('Get  Messages').item.json.from.value[0].address }}",
            "Message ID": "={{ $('Get  Messages').item.json.threadId }}",
            "Date": "={{ $('Get  Messages').item.json.date }}",
            "Message": "={{ $('Get  Messages').item.json.text }}",
            "Catagory": "={{ $('Merge').item.json.output }}",
            "Reply": "={{ $('AI Brain 03').item.json.output }}"
          },
          "matchingColumns": [],
          "schema": [
            {
              "id": "Name",
              "displayName": "Name",
              "required": false,
              "defaultMatch": false,
              "canBeUsedToMatch": true,
              "display": true,
              "type": "string",
              "readOnly": false,
              "removed": false
            },
            {
              "id": "Email",
              "displayName": "Email",
              "required": false,
              "defaultMatch": false,
              "canBeUsedToMatch": true,
              "display": true,
              "type": "string",
              "readOnly": false,
              "removed": false
            },
            {
              "id": "Message",
              "displayName": "Message",
              "required": false,
              "defaultMatch": false,
              "canBeUsedToMatch": true,
              "display": true,
              "type": "string",
              "readOnly": false,
              "removed": false
            },
            {
              "id": "Catagory",
              "displayName": "Catagory",
              "required": false,
              "defaultMatch": false,
              "canBeUsedToMatch": true,
              "display": true,
              "type": "string",
              "readOnly": false,
              "removed": false
            },
            {
              "id": "Reply",
              "displayName": "Reply",
              "required": false,
              "defaultMatch": false,
              "canBeUsedToMatch": true,
              "display": true,
              "type": "string",
              "readOnly": false,
              "removed": false
            },
            {
              "id": "Date",
              "displayName": "Date",
              "required": false,
              "defaultMatch": false,
              "canBeUsedToMatch": true,
              "display": true,
              "type": "dateTime",
              "readOnly": false,
              "removed": false
            },
            {
              "id": "Message ID",
              "displayName": "Message ID",
              "required": false,
              "defaultMatch": false,
              "canBeUsedToMatch": true,
              "display": true,
              "type": "number",
              "readOnly": false,
              "removed": false
            }
          ],
          "attemptToConvertTypes": false,
          "convertFieldsToString": false
        },
        "options": {}
      },
      "type": "n8n-nodes-base.airtable",
      "typeVersion": 2.1,
      "position": [
        784,
        -144
      ],
      "id": "2d173194-7608-4cc7-9e7f-1f7c0463d45b",
      "name": "Data Record",
      "credentials": {
        "airtableTokenApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "operation": "markAsRead",
        "messageId": "={{ $('Get  Messages').item.json.threadId }}"
      },
      "type": "n8n-nodes-base.gmail",
      "typeVersion": 2.2,
      "position": [
        864,
        -304
      ],
      "id": "c65d0fcc-8e0a-4318-83a9-40e6b1546f23",
      "name": "Mark a message as read",
      "credentials": {
        "gmailOAuth2": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "modelName": "models/gemini-2.5-computer-use-preview-10-2025",
        "options": {}
      },
      "type": "@n8n/n8n-nodes-langchain.lmChatGoogleGemini",
      "typeVersion": 1,
      "position": [
        400,
        304
      ],
      "id": "70312364-9be0-4123-9c3d-a84ef0b3f1db",
      "name": "Email Analysis )2",
      "credentials": {
        "googlePalmApi": {
          "name": "<your credential>"
        }
      }
    }
  ],
  "connections": {
    "If": {
      "main": [
        [
          {
            "node": "Edit Fields 01",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Edit Fields 02",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Edit Fields 01": {
      "main": [
        [
          {
            "node": "loop 01",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Schedule Every 1H": {
      "main": [
        [
          {
            "node": "Get  Messages",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Get  Messages": {
      "main": [
        [
          {
            "node": "If",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Edit Fields 02": {
      "main": [
        [
          {
            "node": "Loop 02",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Replace Me": {
      "main": [
        [
          {
            "node": "loop 01",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "loop 01": {
      "main": [
        [
          {
            "node": "AI Brain 01",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Replace Me",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Replace Me1": {
      "main": [
        [
          {
            "node": "Loop 02",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Loop 02": {
      "main": [
        [
          {
            "node": "AI Brain 02",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Replace Me1",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Email Analysis 01": {
      "ai_languageModel": [
        [
          {
            "node": "AI Brain 01",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    },
    "AI Brain 01": {
      "main": [
        [
          {
            "node": "Merge",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "AI Brain 02": {
      "main": [
        [
          {
            "node": "Merge",
            "type": "main",
            "index": 1
          }
        ]
      ]
    },
    "Merge": {
      "main": [
        [
          {
            "node": "AI Brain 03",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Email Responder": {
      "ai_languageModel": [
        [
          {
            "node": "AI Brain 03",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    },
    "AI Brain 03": {
      "main": [
        [
          {
            "node": "Reply to a message",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Reply to a message": {
      "main": [
        [
          {
            "node": "Data Record",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Data Record": {
      "main": [
        [
          {
            "node": "Mark a message as read",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Email Analysis )2": {
      "ai_languageModel": [
        [
          {
            "node": "AI Brain 02",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": true,
  "settings": {
    "executionOrder": "v1",
    "binaryMode": "separate",
    "availableInMCP": false
  },
  "versionId": "97547ba8-674e-4087-a274-bf11a267756e",
  "meta": {
    "templateCredsSetupCompleted": true
  },
  "id": "0wvsf4LGl1xj5aaH",
  "tags": []
}

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.

• airtableTokenApi
• gmailOAuth2
• googlePalmApi
• openAiApi

About this workflow

AI Email Responder Agent. Uses gmail, agent, lmChatOpenAi, airtable. Scheduled trigger; 19 nodes.

Source: https://github.com/muhammadantor/ai-email-responder-agent-n8n/blob/main/workflow.json — original creator credit. Request a take-down →

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