Very simple Human in the loop system email with AI e IMAP
Ready-to-use n8n workflow template for marketing. This automation connects OpenAI with 16 nodes. Import directly into your n8n instance and customize for your needs.
Workflow JSON
{"id": "Nvn78tMRNnKji7Fg", "meta": {"instanceId": "a4bfc93e975ca233ac45ed7c9227d84cf5a2329310525917adaf3312e10d5462", "templateCredsSetupCompleted": true}, "name": "Very simple Human in the loop system email with AI e IMAP", "tags": [], "nodes": [{"id": "271bb16f-9b62-41d9-ab76-114cd7ba915a", "name": "Email Trigger (IMAP)", "type": "n8n-nodes-base.emailReadImap", "position": [-1300, 1340], "parameters": {"options": {}}, "credentials": {"imap": {"id": "", "name": "[Your imap]"}}, "typeVersion": 2}, {"id": "42d150d8-d574-49f9-9c0e-71a2cdea3b79", "name": "Markdown", "type": "n8n-nodes-base.markdown", "position": [-1040, 1340], "parameters": {"html": "={{ $json.textHtml }}", "options": {}}, "typeVersion": 1}, {"id": "e9498a60-0078-4581-b269-7ff552f4047a", "name": "Send Email", "type": "n8n-nodes-base.emailSend", "position": [920, 1320], "webhookId": "a79ae1b4-648c-4cb4-b6cd-04ea3c1d9314", "parameters": {"html": "={{ $('Set Email text').item.json.email }}", "options": {}, "subject": "=Re: {{ $('Email Trigger (IMAP)').item.json.subject }}", "toEmail": "={{ $('Email Trigger (IMAP)').item.json.from }}", "fromEmail": "={{ $('Email Trigger (IMAP)').item.json.to }}"}, "credentials": {"smtp": {"id": "", "name": "[Your smtp]"}}, "typeVersion": 2.1}, {"id": "ab9f6ac3-2095-44df-aeba-2eab96ecf425", "name": "Email Summarization Chain", "type": "@n8n/n8n-nodes-langchain.chainSummarization", "position": [-780, 1340], "parameters": {"options": {"binaryDataKey": "={{ $json.data }}", "summarizationMethodAndPrompts": {"values": {"prompt": "=Write a concise summary of the following in max 100 words:\n\n\"{{ $json.data }}\"\n\nDo not enter the total number of words used.", "combineMapPrompt": "=Write a concise summary of the following in max 100 words:\n\n\"{{ $json.data }}\"\n\nDo not enter the total number of words used."}}}, "operationMode": "nodeInputBinary"}, "typeVersion": 2}, {"id": "86b7c3d0-e1f2-4e2f-b293-8042700d6816", "name": "Write email", "type": "@n8n/n8n-nodes-langchain.agent", "position": [-340, 1340], "parameters": {"text": "=Write the text to reply to the following email:\n\n{{ $json.response.text }}", "options": {"systemMessage": "You are an expert at answering emails. You need to answer them professionally based on the information you have. This is a business email. Be concise and never exceed 100 words. Only the body of the email, not create the subject"}, "promptType": "define", "hasOutputParser": true}, "typeVersion": 1.7}, {"id": "5d5a397f-f9c3-4691-afd0-9a6102679eac", "name": "OpenAI", "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi", "position": [-400, 1560], "parameters": {"model": {"__rl": true, "mode": "list", "value": "gpt-4o-mini", "cachedResultName": "gpt-4o-mini"}, "options": {}}, "credentials": {"openAiApi": {"id": "", "name": "[Your openAiApi]"}}, "typeVersion": 1.2}, {"id": "5b36a295-fda6-4174-9078-0a8ec57620d2", "name": "Sticky Note2", "type": "n8n-nodes-base.stickyNote", "position": [-800, 1260], "parameters": {"width": 320, "height": 240, "content": "Chain that summarizes the received email"}, "typeVersion": 1}, {"id": "7110fe1f-0099-49aa-9095-96e733aa468f", "name": "Sticky Note5", "type": "n8n-nodes-base.stickyNote", "position": [-360, 1260], "parameters": {"width": 340, "height": 240, "content": "Agent that retrieves business information from a vector database and processes the response"}, "typeVersion": 1}, {"id": "e2bdbd64-3c37-4867-ae2c-0f6937d82b81", "name": "Sticky Note1", "type": "n8n-nodes-base.stickyNote", "position": [-1100, 1260], "parameters": {"height": 240, "content": "Convert email to Markdown format for better understanding of LLM models"}, "typeVersion": 1}, {"id": "8ae5d216-5897-4c33-800a-27ff939b174a", "name": "Sticky Note7", "type": "n8n-nodes-base.stickyNote", "position": [620, 1300], "parameters": {"height": 180, "content": "If the feedback is OK send email"}, "typeVersion": 1}, {"id": "4cfce63c-5931-45c5-99ca-eb85dca962b5", "name": "Approve Email", "type": "n8n-nodes-base.emailSend", "position": [380, 1340], "webhookId": "4f9f06e7-9b2b-4896-9b51-245972341d12", "parameters": {"message": "=<h3>MESSAGE</h3>\n{{ $('Email Trigger (IMAP)').item.json.textHtml }}\n\n<h3>AI RESPONSE</h3>\n{{ $json.email }}", "options": {}, "subject": "=[Approval Required] {{ $('Email Trigger (IMAP)').item.json.subject }}", "toEmail": "info@n3witalia.com", "fromEmail": "info@n3witalia.com", "operation": "sendAndWait"}, "credentials": {"smtp": {"id": "", "name": "[Your smtp]"}}, "typeVersion": 2.1}, {"id": "d6c8acd2-ebc1-4aaa-bfcc-cdb18fcc8715", "name": "OpenAI Chat Model", "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi", "position": [-820, 1560], "parameters": {"model": {"__rl": true, "mode": "list", "value": "deepseek-chat", "cachedResultName": "deepseek-chat"}, "options": {}}, "credentials": {"openAiApi": {"id": "", "name": "[Your openAiApi]"}}, "typeVersion": 1.2}, {"id": "33bbedeb-129a-4e99-ab5a-9e0ec4456156", "name": "Set Email text", "type": "n8n-nodes-base.set", "position": [100, 1340], "parameters": {"options": {}, "assignments": {"assignments": [{"id": "35d7c303-42f4-4dd1-b41e-6eb087c23c3d", "name": "email", "type": "string", "value": "={{ $json.output }}"}]}}, "typeVersion": 3.4}, {"id": "2293e0e6-4f2a-4622-a610-64b65f34e1e5", "name": "Sticky Note", "type": "n8n-nodes-base.stickyNote", "position": [320, 1300], "parameters": {"height": 180, "content": "Human in the loop"}, "typeVersion": 1}, {"id": "510196ec-adaf-4e6c-aac0-8ca8b754438a", "name": "Sticky Note11", "type": "n8n-nodes-base.stickyNote", "position": [-1100, 940], "parameters": {"color": 3, "width": 540, "height": 260, "content": "# How it works\nThis workflow automates the handling of incoming emails, summarizes their content, generates appropriate responses and validate it through send IMAP email with \"Human in the loop\" system. \n\nYou can quickly integrate Gmail and Outlook via the appropriate nodes"}, "typeVersion": 1}, {"id": "c4c9157d-4d05-47a1-a5eb-63865e838d39", "name": "Approved?", "type": "n8n-nodes-base.if", "position": [680, 1340], "parameters": {"options": {}, "conditions": {"options": {"version": 2, "leftValue": "", "caseSensitive": true, "typeValidation": "strict"}, "combinator": "and", "conditions": [{"id": "62e26bc5-1732-4699-a602-99490c7406fd", "operator": {"type": "boolean", "operation": "true", "singleValue": true}, "leftValue": "={{ $json.data.approved }}", "rightValue": ""}]}}, "typeVersion": 2.2}], "active": false, "pinData": {}, "settings": {"executionOrder": "v1"}, "versionId": "47e79286-00f4-48e8-a0d1-e0f56d9ba0d5", "connections": {"OpenAI": {"ai_languageModel": [[{"node": "Write email", "type": "ai_languageModel", "index": 0}]]}, "Markdown": {"main": [[{"node": "Email Summarization Chain", "type": "main", "index": 0}]]}, "Approved?": {"main": [[{"node": "Send Email", "type": "main", "index": 0}], []]}, "Write email": {"main": [[{"node": "Set Email text", "type": "main", "index": 0}]]}, "Approve Email": {"main": [[{"node": "Approved?", "type": "main", "index": 0}]]}, "Set Email text": {"main": [[{"node": "Approve Email", "type": "main", "index": 0}]]}, "OpenAI Chat Model": {"ai_languageModel": [[{"node": "Email Summarization Chain", "type": "ai_languageModel", "index": 0}]]}, "Email Trigger (IMAP)": {"main": [[{"node": "Markdown", "type": "main", "index": 0}]]}, "Email Summarization Chain": {"main": [[{"node": "Write email", "type": "main", "index": 0}]]}}}How to Import This Workflow
- 1Copy the workflow JSON above using the Copy Workflow JSON button.
- 2Open your n8n instance and go to Workflows.
- 3Click Import from JSON and paste the copied workflow.
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