This workflow follows the Emailsend → HTTP Request recipe pattern — see all workflows that pair these two integrations.
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 →
{
"nodes": [
{
"parameters": {
"httpMethod": "POST",
"path": "upload",
"options": {}
},
"id": "2c602eb6-bc04-4fd6-abef-77039a77e4bf",
"name": "Server webhook",
"type": "n8n-nodes-base.webhook",
"typeVersion": 1,
"position": [
-496,
-432
]
},
{
"parameters": {
"jsCode": "const item = items[0];\n\nlet binary, fileName, mimeType, userEmail;\n\nif (item.binary?.data) {\n // Telegram case\n binary = item.binary.data;\n fileName = item.binary.data.fileName;\n mimeType = item.binary.data.mimeType;\n} else if (item.binary?.file) {\n // Webhook case (if uploaded binary exists here)\n binary = item.binary.file;\n fileName = item.binary.file.fileName;\n mimeType = item.binary.file.mimeType;\n} else {\n // JSON-only upload (base64 in body)\n binary = { data: item.json.file };\n fileName = item.json.filename;\n mimeType = item.json.mimeType;\n}\n\nreturn [{\n json: {\n file: binary.data, // always base64 here\n filename: fileName,\n userEmail: item.json.body?.userEmail || item.json.userEmail,\n mimeType: mimeType\n },\n binary: {\n file: binary // keep raw binary if exists\n }\n}];\n"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
-32,
-272
],
"id": "01035f32-0e92-4fee-8b1f-fccf1165d4da",
"name": "Process File Data"
},
{
"parameters": {
"resource": "document",
"modelId": {
"__rl": true,
"value": "models/gemini-2.5-flash",
"mode": "list",
"cachedResultName": "models/gemini-2.5-flash"
},
"text": "You are an **expert AI academic assistant**. Your task is to analyze the assignment content and generate **a single, raw HTML file** as output.\nif you dont think the uploaded file is not an assignment tell the user \" Please upload a valid file (PDF, DOCX, PPTX, PNG, JPG, max 5MB) so I can evaluate\"in an html file format \nwith the output format below.\n ---\n ## Output Format\n * Only raw HTML. Start immediately with `<!DOCTYPE html>`.\n * Self-contained HTML with:\n - Internal CSS\n - Main title\n - Sections for each question/answer\n * Use `<pre><code>` for code blocks and `<table>` for tables.\n \n ---\n ## MathJax Support\n Include MathJax in `<head>` for LaTeX:\n\n <script>\n MathJax = {\n tex: {\n inlineMath: [['$', '$'], ['\\\\(', '\\\\)']],\n displayMath: [['$$', '$$'], ['\\\\[', '\\\\]']]\n }\n };\n </script>\n <script id=\"MathJax-script\" async src=\"https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js\"></script>\n\n ---\n ## Subject Rules\n\n ### Mathematics\n * Provide **full step-by-step solutions**, no skipped steps.\n * Use LaTeX for all formulas.\n\n ### Java\n * Provide **full compilable program**, no comments.\n * Descriptive variable names.\n * Only implement requested functionality.\n\n ### DSA (C language)\n * Include:\n 1. Algorithm/pseudocode (with comments)\n 2. Full C program (no comments)\n * Use descriptive variables and simple logic.\n\n ### Theory of Computation (TOC)\n * Include sections:\n 1. **Transition Diagram**: Use LaTeX TikZ if possible. Otherwise, use SVG or CSS circles/arrows.\n 2. **Transition Table**: HTML `<table>` with clear headers.\n 3. **Transition Steps**: Show every state change explicitly.\n\n ### Unknown Subjects\n * Provide structured, clear textual answers using headings and lists.\n\n ---\n ## Error Handling\n If content is incomplete/unclear, output a valid HTML page with:\n `<section>Assignment content is incomplete or unclear. Please provide more details.</section>`\n\n ---\n ## HTML Skeleton\n <!DOCTYPE html>\n <html lang=\"en\">\n <head>\n <meta charset=\"UTF-8\">\n <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n <title>Assignment Solutions</title>\n <style>\n body { font-family: Arial, sans-serif; margin: 20px; }\n h1 { text-align: center; }\n h2 { color: #2c3e50; margin-top: 30px; }\n table { border-collapse: collapse; margin-top: 10px; }\n table, th, td { border: 1px solid #444; padding: 8px; text-align: center; }\n pre { background: #f4f4f4; padding: 10px; border-radius: 6px; }\n </style>\n </head>\n <body>\n <h1>Assignment Solutions</h1>\n <!-- Answers go here -->\n </body>\n </html>\n\n ---\n ## Begin Analysis\n Analyze the assignment and generate the response strictly following these rules. Output **only the raw HTML document**.\n",
"inputType": "binary",
"binaryPropertyName": "file",
"options": {}
},
"type": "@n8n/n8n-nodes-langchain.googleGemini",
"typeVersion": 1,
"position": [
240,
-272
],
"id": "57febc95-ea1a-45a1-ae47-bb5bc2a1c598",
"name": "Analyze with Gemini",
"retryOnFail": true,
"credentials": {
"googlePalmApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"jsCode": "\nlet htmlContent = '';\n\n\nif (\n items[0].json.content &&\n items[0].json.content.parts &&\n items[0].json.content.parts.length > 0 &&\n items[0].json.content.parts[0].text\n) {\n htmlContent = items[0].json.content.parts[0].text;\n} else if (\n items[0].json.candidates &&\n items[0].json.candidates[0].content &&\n items[0].json.candidates[0].content.parts[0].text\n) {\n htmlContent = items[0].json.candidates[0].content.parts[0].text;\n} else {\n htmlContent = JSON.stringify(items[0].json, null, 2);\n}\n\n\n// --- NEW CODE TO CLEAN THE RESPONSE ---\n// This regular expression finds and removes the starting ```html and the closing ```.\n// It also handles surrounding whitespace and newlines, making it robust.\nconst cleanedHtml = htmlContent.replace(/^`{3}(?:html)?\\s*|\\s*`{3}$/g, '').trim();\n\n\nreturn [\n {\n json: {\n html: cleanedHtml}\n }\n];"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
432,
-272
],
"id": "288c2a2b-2990-4a36-9a60-12b93aae589f",
"name": "Clean HTML"
},
{
"parameters": {
"method": "POST",
"url": "https://api.pdfshift.io/v3/convert/pdf",
"authentication": "genericCredentialType",
"genericAuthType": "httpBasicAuth",
"sendBody": true,
"bodyParameters": {
"parameters": [
{
"name": "=source",
"value": "={{$json[\"html\"]}}"
}
]
},
"options": {
"response": {
"response": {
"responseFormat": "file"
}
}
}
},
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
640,
-272
],
"id": "dd23c6a3-c27b-407c-8adb-9fd3247b276c",
"name": "PDFShift API",
"credentials": {
"httpBasicAuth": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"jsCode": "const current = items[0].json;\n\nconst userEmail = current.userEmail';\n\n// Pass these to next node\nreturn [{\n json: {\n userEmail: userEmail,\n },\n}];"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
80,
0
],
"id": "737aa6dd-1881-41a7-aeca-f013575bed5d",
"name": "user email"
},
{
"parameters": {
"jsCode": "const htmlItem = items.find(item => item.json.html);\nconst pdfItem = items.find(item => item.binary?.data);\nconst emailItem = items.find(item => item.json.userEmail);\n\nreturn [{\n json: {\n html: htmlItem?.json?.html || '',\n userEmail: emailItem?.json?.userEmail || ''\n },\n binary: {\n file: pdfItem?.binary?.data \n }\n}];\n"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
768,
0
],
"id": "cad84046-ffae-4540-9876-b774d530ddcb",
"name": "Final Ouputs"
},
{
"parameters": {
"fromEmail": "losndfoun@gmail.com",
"toEmail": "={{ $json[\"userEmail\"] }}",
"subject": "={{ \"Processed Assignment: Ready for Download!!\"}}",
"html": "=",
"attachments": "file",
"options": {
"allowUnauthorizedCerts": true
}
},
"id": "e356e004-a6a6-49f5-972d-71c7b3d0eaed",
"name": "Send Email",
"type": "n8n-nodes-base.emailSend",
"typeVersion": 1,
"position": [
976,
0
],
"credentials": {
"smtp": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"updates": [
"message"
],
"additionalFields": {
"download": true
}
},
"id": "249adff7-8c7f-4b58-88bc-5aeaebc01585",
"name": "Telegram Trigger",
"type": "n8n-nodes-base.telegramTrigger",
"typeVersion": 1.1,
"position": [
-816,
-16
],
"alwaysOutputData": false,
"executeOnce": false,
"credentials": {
"telegramApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"operation": "sendDocument",
"chatId": "={{$json[\"chatId\"]}}",
"binaryData": "={{ true }}",
"additionalFields": {}
},
"id": "f3f242a8-7873-4c43-8332-3f9555af3ad1",
"name": "Send Back to Telegram",
"type": "n8n-nodes-base.telegram",
"typeVersion": 1.2,
"position": [
992,
224
],
"credentials": {
"telegramApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 2
},
"conditions": [
{
"id": "23aeeee3-0d90-433e-873f-97991801ad5b",
"leftValue": "={{$json[\"chatId\"]}}",
"rightValue": "0",
"operator": {
"type": "string",
"operation": "notEmpty",
"singleValue": true
}
}
],
"combinator": "and"
},
"options": {}
},
"type": "n8n-nodes-base.if",
"typeVersion": 2.2,
"position": [
416,
240
],
"id": "2b837a57-2292-47bd-b949-b313e3bc3093",
"name": "If"
},
{
"parameters": {
"mode": "combine",
"combineBy": "combineByPosition",
"options": {
"includeUnpaired": true
}
},
"type": "n8n-nodes-base.merge",
"typeVersion": 3.2,
"position": [
-80,
240
],
"id": "6fa7fd10-c972-43f1-a080-4873d988e5e3",
"name": "Merge2"
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 2
},
"conditions": [
{
"id": "5173d79e-5f97-4a70-bbd9-38f53d455196",
"leftValue": "={{ $json.userEmail }}",
"rightValue": "",
"operator": {
"type": "string",
"operation": "exists",
"singleValue": true
}
}
],
"combinator": "and"
},
"options": {}
},
"type": "n8n-nodes-base.if",
"typeVersion": 2.2,
"position": [
288,
0
],
"id": "51962b2c-8de8-465c-8b90-18bf78b8667e",
"name": "If1"
},
{
"parameters": {
"chatId": "={{ $json[\"message\"][\"chat\"][\"id\"].toString() }}",
"text": "file size too large",
"additionalFields": {}
},
"type": "n8n-nodes-base.telegram",
"typeVersion": 1.2,
"position": [
-256,
0
],
"id": "31ae9589-901b-4575-a96d-4fcb0b9c86de",
"name": "Send a text message",
"credentials": {
"telegramApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "loose",
"version": 2
},
"conditions": [
{
"id": "e0ad4f46-c682-48f6-b31d-b5ee666def27",
"leftValue": "={{$json[\"message\"][\"document\"][\"file_size\"]}} ",
"rightValue": 5000000,
"operator": {
"type": "number",
"operation": "lt"
}
},
{
"id": "eee51b6a-b469-48be-9fa5-3a288b49c889",
"leftValue": "={{$json[\"message\"]?.photo?.[2]?.file_size ?? 0}}",
"rightValue": 5000000,
"operator": {
"type": "number",
"operation": "lt"
}
}
],
"combinator": "or"
},
"looseTypeValidation": true,
"options": {}
},
"type": "n8n-nodes-base.if",
"typeVersion": 2.2,
"position": [
-496,
-16
],
"id": "23235fce-da24-4371-973c-1cef7b526454",
"name": "File Size"
},
{
"parameters": {},
"type": "n8n-nodes-base.merge",
"typeVersion": 3.2,
"position": [
528,
0
],
"id": "67386a8c-3e91-4b85-b081-0ab315f6d166",
"name": "Merge1"
},
{
"parameters": {},
"type": "n8n-nodes-base.merge",
"typeVersion": 3.2,
"position": [
-256,
-272
],
"id": "935c8af5-1595-411b-a6b0-6bf89ff20221",
"name": "Merge"
},
{
"parameters": {
"assignments": {
"assignments": [
{
"id": "d2d00b5d-b58c-4c69-828f-f39359885b2d",
"name": "chatId",
"value": "={{ $json[\"message\"][\"chat\"][\"id\"].toString() }}",
"type": "string"
}
]
},
"options": {}
},
"type": "n8n-nodes-base.set",
"typeVersion": 3.4,
"position": [
-704,
224
],
"id": "e76da736-ce55-4a7e-a386-1d5df0654767",
"name": "chatId"
}
],
"connections": {
"Server webhook": {
"main": [
[
{
"node": "Merge",
"type": "main",
"index": 0
}
]
]
},
"Process File Data": {
"main": [
[
{
"node": "user email",
"type": "main",
"index": 0
},
{
"node": "Analyze with Gemini",
"type": "main",
"index": 0
}
]
]
},
"Analyze with Gemini": {
"main": [
[
{
"node": "Clean HTML",
"type": "main",
"index": 0
}
]
]
},
"Clean HTML": {
"main": [
[
{
"node": "PDFShift API",
"type": "main",
"index": 0
}
]
]
},
"PDFShift API": {
"main": [
[
{
"node": "Merge2",
"type": "main",
"index": 1
}
]
]
},
"user email": {
"main": [
[
{
"node": "If1",
"type": "main",
"index": 0
}
]
]
},
"Final Ouputs": {
"main": [
[
{
"node": "Send Email",
"type": "main",
"index": 0
}
]
]
},
"Telegram Trigger": {
"main": [
[
{
"node": "chatId",
"type": "main",
"index": 0
},
{
"node": "File Size",
"type": "main",
"index": 0
}
],
[]
]
},
"Send Back to Telegram": {
"main": [
[]
]
},
"If": {
"main": [
[
{
"node": "Send Back to Telegram",
"type": "main",
"index": 0
}
],
[
{
"node": "Merge1",
"type": "main",
"index": 1
}
]
]
},
"Merge2": {
"main": [
[
{
"node": "If",
"type": "main",
"index": 0
}
]
]
},
"If1": {
"main": [
[
{
"node": "Merge1",
"type": "main",
"index": 0
}
]
]
},
"File Size": {
"main": [
[
{
"node": "Merge",
"type": "main",
"index": 1
}
],
[
{
"node": "Send a text message",
"type": "main",
"index": 0
}
]
]
},
"Merge1": {
"main": [
[
{
"node": "Final Ouputs",
"type": "main",
"index": 0
}
]
]
},
"Merge": {
"main": [
[
{
"node": "Process File Data",
"type": "main",
"index": 0
}
]
]
},
"chatId": {
"main": [
[
{
"node": "Merge2",
"type": "main",
"index": 0
}
]
]
}
},
"meta": {
"templateCredsSetupCompleted": true
}
}
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.
googlePalmApihttpBasicAuthsmtptelegramApi
Pro
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About this workflow
Agent. Uses googleGemini, httpRequest, emailSend, telegramTrigger. Webhook trigger; 18 nodes.
Source: https://github.com/Srinanth/AI-Agent/blob/fec70805502f4eb8343f1f7e8e3162c8d2c83ddc/workflows/agent.json — original creator credit. Request a take-down →
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