This workflow follows the Gmail Trigger → Google Drive 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": [
{
"id": "deafa2e8-af41-4f11-92e0-09992f6c6970",
"name": "Read PDF",
"type": "n8n-nodes-base.readPDF",
"position": [
860,
1420
],
"parameters": {},
"typeVersion": 1
},
{
"id": "8e3ddbb1-83a1-4f79-9464-61d5a20f0427",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
-760,
1300
],
"parameters": {
"width": 444.034812880766,
"height": 599.5274151436035,
"content": "## Envie anexos PDF espec\u00edficos do Gmail para o Google Drive usando OpenAI\n\n_**AVISO**: Voc\u00ea pode ter resultados vari\u00e1veis ao usar este fluxo, ent\u00e3o esteja preparado para validar a corre\u00e7\u00e3o dos resultados da OpenAI._\n\nEste fluxo l\u00ea o conte\u00fado textual de PDFs e envia o texto para a OpenAI. Anexos de interesse ser\u00e3o ent\u00e3o enviados para uma pasta espec\u00edfica do Google Drive. Por exemplo, voc\u00ea pode querer enviar notas fiscais recebidas por e-mail para uma pasta de entrada no Google Drive, para processamento posterior. Este fluxo foi desenhado para que voc\u00ea possa facilmente mudar o termo de busca conforme sua necessidade. Veja o fluxo para mais detalhes.\n\n### Como funciona\n1. Dispara no node `On email received`.\n2. Itera sobre os anexos do e-mail.\n3. Usa o node `OpenAI` para filtrar os anexos que n\u00e3o correspondem ao termo de busca definido no node `Configure`. Voc\u00ea pode buscar por v\u00e1rios tipos de PDF (ex.: nota fiscal, recibo ou contrato).\n4. Se o anexo PDF corresponder ao termo de busca, o fluxo usa o node `Google Drive` para enviar o anexo PDF para uma pasta espec\u00edfica do Google Drive.\n\n\nFluxo escrito por [David Sha](https://davidsha.me)."
},
"typeVersion": 1
},
{
"id": "fb2c3697-a92f-4be1-b9a6-0326f87de70b",
"name": "Configure",
"type": "n8n-nodes-base.set",
"position": [
-20,
1520
],
"parameters": {
"values": {
"number": [
{
"name": "maxTokenSize",
"value": 4000
},
{
"name": "replyTokenSize",
"value": 50
}
],
"string": [
{
"name": "Match on",
"value": "payslip"
},
{
"name": "Google Drive folder to upload matched PDFs",
"value": "https://drive.google.com/drive/u/0/folders/1SKdHTnYoBNlnhF_QJ-Zyepy-3-WZkObo"
}
]
},
"options": {}
},
"typeVersion": 1
},
{
"id": "792c49f4-06e3-4d77-a31f-1513f70abf32",
"name": "Is PDF",
"type": "n8n-nodes-base.if",
"position": [
640,
1520
],
"parameters": {
"conditions": {
"string": [
{
"value1": "={{ $binary.data.fileExtension }}",
"value2": "pdf"
}
]
}
},
"typeVersion": 1
},
{
"id": "82be9111-665d-41c6-8190-2247acdb749b",
"name": "Not a PDF",
"type": "n8n-nodes-base.noOp",
"position": [
860,
1620
],
"parameters": {},
"typeVersion": 1
},
{
"id": "c2ac155f-38ee-46f2-8a24-5614e3c32ff5",
"name": "Is matched",
"type": "n8n-nodes-base.if",
"position": [
1720,
1480
],
"parameters": {
"conditions": {
"string": [
{
"value1": "={{ $json[\"text\"] }}",
"value2": "true"
}
]
}
},
"typeVersion": 1
},
{
"id": "4a8f15b8-c153-493d-9a2a-d63d911d642d",
"name": "This is a matched PDF",
"type": "n8n-nodes-base.noOp",
"position": [
1940,
1380
],
"parameters": {},
"typeVersion": 1
},
{
"id": "89601591-5c7b-461c-859b-25c7c1f0c2e6",
"name": "This is not a matched PDF",
"type": "n8n-nodes-base.noOp",
"position": [
1940,
1580
],
"parameters": {},
"typeVersion": 1
},
{
"id": "ac517c4a-83b8-441f-b14c-c927c18f8012",
"name": "Iterate over email attachments",
"type": "n8n-nodes-base.code",
"position": [
420,
1420
],
"parameters": {
"jsCode": "// https://community.n8n.io/t/iterating-over-email-attachments/13588/3\nlet results = [];\n\nfor (const item of $input.all()) {\n for (key of Object.keys(item.binary)) {\n results.push({\n json: {},\n binary: {\n data: item.binary[key],\n }\n });\n }\n}\n\nreturn results;"
},
"typeVersion": 1
},
{
"id": "79fdf2de-42fe-4ebb-80fb-cc80dcd284f9",
"name": "OpenAI matches PDF textual content",
"type": "n8n-nodes-base.openAi",
"position": [
1300,
1340
],
"parameters": {
"prompt": "=Este arquivo PDF parece ser um(a) {{ $(\"Configure\").first().json[\"Match on\"] }}? Retorne \"true\" se for um(a) {{ $(\"Configure\").first().json[\"Match on\"] }} e \"false\" caso contr\u00e1rio. Responda apenas com letras min\u00fasculas \"true\" ou \"false\".\n\nEste \u00e9 o nome do arquivo PDF:\n```\n{{ $binary.data.fileName }}\n```\n\nEste \u00e9 o conte\u00fado textual do PDF:\n```\n{{ $json.text }}\n```",
"options": {
"maxTokens": "={{ $('Configure').first().json.replyTokenSize }}",
"temperature": 0.1
}
},
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
},
"typeVersion": 1,
"alwaysOutputData": false
},
{
"id": "8bdb3263-40f2-4277-8cc0-f6edef90a1cd",
"name": "Merge",
"type": "n8n-nodes-base.merge",
"position": [
1500,
1480
],
"parameters": {
"mode": "combine",
"options": {
"clashHandling": {
"values": {
"resolveClash": "preferInput1"
}
}
},
"combinationMode": "mergeByPosition"
},
"typeVersion": 2
},
{
"id": "8e68e725-b2df-4c0c-8b17-e0cd4610714d",
"name": "Upload file to folder",
"type": "n8n-nodes-base.googleDrive",
"position": [
2160,
1380
],
"parameters": {
"name": "={{ $binary.data.fileName }}",
"options": {},
"parents": [
"={{ $('Configure').first().json[\"Google Drive folder to upload matched PDFs\"].split(\"/\").at(-1) }}"
],
"binaryData": true
},
"credentials": {
"googleDriveOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 2
},
{
"id": "bda00901-5ade-471c-b6f9-a18ef4d71589",
"name": "On email received",
"type": "n8n-nodes-base.gmailTrigger",
"position": [
-240,
1520
],
"parameters": {
"simple": false,
"filters": {},
"options": {
"downloadAttachments": true,
"dataPropertyAttachmentsPrefixName": "attachment_"
},
"pollTimes": {
"item": [
{
"mode": "everyMinute"
}
]
}
},
"credentials": {
"gmailOAuth2": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"id": "b2ff4774-336b-47a3-af3f-ada809ed9b8a",
"name": "Note5",
"type": "n8n-nodes-base.stickyNote",
"position": [
-100,
1440
],
"parameters": {
"width": 259.0890718059702,
"height": 607.9684549079709,
"content": "### Configura\u00e7\u00e3o\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n__`Match on`(obrigat\u00f3rio)__: Qual deve ser o termo de busca da OpenAI? Exemplos: invoice, callsheet, receipt, contract, payslip.\n__`Google Drive folder to upload matched PDFs`(obrigat\u00f3rio)__: Cole o link da pasta do GDrive; um exemplo foi fornecido, mas voc\u00ea precisar\u00e1 alter\u00e1-lo para uma pasta sua.\n__`maxTokenSize`(obrigat\u00f3rio)__: O tamanho m\u00e1ximo de tokens para o modelo escolhido. Veja modelos dispon\u00edveis da OpenAI [aqui](https://platform.openai.com/docs/models/gpt-3).\n__`replyTokenSize`(obrigat\u00f3rio)__: O tamanho m\u00e1ximo de tokens da resposta. O padr\u00e3o \u00e9 300. Isso determina o tamanho do texto da resposta da IA."
},
"typeVersion": 1
},
{
"id": "beb571fe-e7a3-4f3c-862b-dc01821e5f3f",
"name": "Ignore large PDFs",
"type": "n8n-nodes-base.noOp",
"position": [
1300,
1620
],
"parameters": {},
"typeVersion": 1
},
{
"id": "f3c4f249-08a7-4e5e-8f46-e07393ac10b5",
"name": "Is text within token limit?",
"type": "n8n-nodes-base.if",
"position": [
1080,
1520
],
"parameters": {
"conditions": {
"boolean": [
{
"value1": "={{ $json.text.length() / 4 <= $('Configure').first().json.maxTokenSize - $('Configure').first().json.replyTokenSize }}",
"value2": true
}
]
}
},
"typeVersion": 1
},
{
"id": "93b6fb96-3e0e-4953-bd09-cf882d2dc69c",
"name": "Has attachments?",
"type": "n8n-nodes-base.if",
"position": [
200,
1520
],
"parameters": {
"conditions": {
"boolean": [
{
"value1": "={{ $('On email received').item.binary.isNotEmpty() }}",
"value2": true
}
]
}
},
"typeVersion": 1
},
{
"id": "554d415e-a965-46be-8442-35c4cb6b005c",
"name": "There are no attachments",
"type": "n8n-nodes-base.noOp",
"position": [
420,
1620
],
"parameters": {},
"typeVersion": 1
}
],
"connections": {
"Merge": {
"main": [
[
{
"node": "Is matched",
"type": "main",
"index": 0
}
]
]
},
"Is PDF": {
"main": [
[
{
"node": "Read PDF",
"type": "main",
"index": 0
}
],
[
{
"node": "Not a PDF",
"type": "main",
"index": 0
}
]
]
},
"Read PDF": {
"main": [
[
{
"node": "Is text within token limit?",
"type": "main",
"index": 0
}
]
]
},
"Configure": {
"main": [
[
{
"node": "Has attachments?",
"type": "main",
"index": 0
}
]
]
},
"Is matched": {
"main": [
[
{
"node": "This is a matched PDF",
"type": "main",
"index": 0
}
],
[
{
"node": "This is not a matched PDF",
"type": "main",
"index": 0
}
]
]
},
"Has attachments?": {
"main": [
[
{
"node": "Iterate over email attachments",
"type": "main",
"index": 0
}
],
[
{
"node": "There are no attachments",
"type": "main",
"index": 0
}
]
]
},
"On email received": {
"main": [
[
{
"node": "Configure",
"type": "main",
"index": 0
}
]
]
},
"This is a matched PDF": {
"main": [
[
{
"node": "Upload file to folder",
"type": "main",
"index": 0
}
]
]
},
"Is text within token limit?": {
"main": [
[
{
"node": "OpenAI matches PDF textual content",
"type": "main",
"index": 0
},
{
"node": "Merge",
"type": "main",
"index": 1
}
],
[
{
"node": "Ignore large PDFs",
"type": "main",
"index": 0
}
]
]
},
"Iterate over email attachments": {
"main": [
[
{
"node": "Is PDF",
"type": "main",
"index": 0
}
]
]
},
"OpenAI matches PDF textual content": {
"main": [
[
{
"node": "Merge",
"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.
gmailOAuth2googleDriveOAuth2ApiopenAiApi
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About this workflow
24-Pdf-Anexo-Google-Drive. Uses readPDF, openAi, googleDrive, gmailTrigger. Event-driven trigger; 18 nodes.
Source: https://github.com/mascenaa/AutoPronto/blob/d3dafe08d296506b85c3bd29aba5d98df9c9906a/pacotes/kit-completo/24-pdf-anexo-google-drive.json — original creator credit. Request a take-down →
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