About this recipe
A recipe for Create E Mail Responses With Fastmail And Openai
Recipe Template
{
"meta": {
"instanceId": "04ab549d8bbb435ec33b81e4e29965c46cf6f0f9e7afe631018b5e34c8eead58"
},
"nodes": [
{
"id": "082d1828-72b1-48c0-8426-c8051c29f0db",
"name": "Session",
"type": "n8n-nodes-base.httpRequest",
"position": [
-20,
-20
],
"parameters": {
"url": "https:\/\/api.fastmail.com\/jmap\/session",
"options": [],
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth"
},
"credentials": {
"httpHeaderAuth": {
"id": "3IRsYkeB2ofrwQjv",
"name": "Fastmail"
}
},
"typeVersion": 4.2
},
{
"id": "d7dc4c50-c8fc-4999-918d-5d357567ed14",
"name": "Get Mailbox IDs",
"type": "n8n-nodes-base.httpRequest",
"notes": "https:\/\/api.fastmail.com\/.well-known\/jmap\n\nhttps:\/\/api.fastmail.com\/jmap\/session",
"position": [
200,
-20
],
"parameters": {
"url": "https:\/\/api.fastmail.com\/jmap\/api\/",
"method": "POST",
"options": [],
"jsonBody": "={\n \"using\": [\"urn:ietf:params:jmap:core\", \"urn:ietf:params:jmap:mail\"],\n \"methodCalls\": [\n [\n \"Mailbox\/get\",\n {\n \"accountId\": \"{{ $('Session').item.json.primaryAccounts['urn:ietf:params:jmap:mail'] }}\"\n },\n \"c0\"\n ]\n ]\n }",
"sendBody": true,
"sendHeaders": true,
"specifyBody": "json",
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth",
"headerParameters": {
"parameters": [
{
"name": "Content-Type",
"value": "application\/json"
},
{
"name": "Accept",
"value": "application\/json"
}
]
}
},
"credentials": {
"httpHeaderAuth": {
"id": "3IRsYkeB2ofrwQjv",
"name": "Fastmail"
}
},
"typeVersion": 4.2
},
{
"id": "31be3c1c-f4c5-4309-92b3-2fd0a3fcecc6",
"name": "Split Out",
"type": "n8n-nodes-base.splitOut",
"position": [
400,
-20
],
"parameters": {
"options": [],
"fieldToSplitOut": "methodResponses[0][1].list"
},
"typeVersion": 1
},
{
"id": "93de4dad-70d6-4e16-b351-7c540c3a4bfa",
"name": "Email Trigger (IMAP)",
"type": "n8n-nodes-base.emailReadImap",
"position": [
-20,
-240
],
"parameters": {
"options": {
"customEmailConfig": "[\"UNSEEN\"]"
},
"postProcessAction": "nothing",
"downloadAttachments": true
},
"credentials": {
"imap": {
"id": "vFzz9hU9rTHVHs3I",
"name": "IMAP"
}
},
"typeVersion": 2
},
{
"id": "41e77a60-622f-426c-a50c-e0df03c53208",
"name": "Get fields from source email",
"type": "n8n-nodes-base.set",
"position": [
200,
-240
],
"parameters": {
"options": [],
"assignments": {
"assignments": [
{
"id": "a9d425bd-e576-4e38-a251-b462240d3e2d",
"name": "textPlain",
"type": "string",
"value": "={{ $json.textPlain }}"
},
{
"id": "7071a252-fcad-4aa1-953f-205c3e403497",
"name": "from",
"type": "string",
"value": "={{ $json.from }}"
},
{
"id": "c4b0ed1b-590c-4d7f-b494-a0f34304cc1a",
"name": "subject",
"type": "string",
"value": "={{ $json.subject }}"
},
{
"id": "7e0badd1-02be-4149-b9ff-286f0943f051",
"name": "metadata['message-id']",
"type": "string",
"value": "={{ $json.metadata['message-id'] }}"
},
{
"id": "f87c7c15-c1d3-4696-bcd4-6677e5ddb240",
"name": "metadata['reply-to']",
"type": "string",
"value": "={{ $json.metadata['reply-to'] }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "f9d1a529-1377-456b-8357-d37fb3fe74f9",
"name": "OpenAI",
"type": "@n8n\/n8n-nodes-langchain.openAi",
"position": [
400,
-240
],
"parameters": {
"modelId": {
"__rl": true,
"mode": "list",
"value": "gpt-4o",
"cachedResultName": "GPT-4O"
},
"options": [],
"messages": {
"values": [
{
"content": "=Please analyze the following personal email and draft a casual response based solely on its content. Return only the response text without any additional introductions or formatting. The response should include appropriate greetings (e.g., \"Hi\", \"Hallo\", \"Moin\" in German or \"Hi\", \"Hello\" in English) and sign-offs (e.g., \"Gru\u00df\", \"Lieben Gru\u00df\" in German or \"Regards\" in English). Add a thanks if appropriate. Use \"Du\" only if appropriate; if the email contains \"Sie\", maintain the same formality.\n\nSubject: {{ $json.subject }}\nEmail Content: {{ $json.textPlain }}"
}
]
}
},
"credentials": {
"openAiApi": {
"id": "iW0ItIt1ZxCQrBqk",
"name": "OpenAI"
}
},
"typeVersion": 1.5
},
{
"id": "c421ddc9-b230-499c-a11d-a20a68d30c5b",
"name": "Filter for drafts folder",
"type": "n8n-nodes-base.filter",
"position": [
560,
-20
],
"parameters": {
"options": [],
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "4e4c63d1-40fe-4314-bfe7-4fee62c78b88",
"operator": {
"name": "filter.operator.equals",
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.role }}",
"rightValue": "drafts"
}
]
}
},
"typeVersion": 2.2
},
{
"id": "ef19fde4-cf8c-4e19-912e-822611c18056",
"name": "upload draft email",
"type": "n8n-nodes-base.httpRequest",
"notes": "https:\/\/api.fastmail.com\/.well-known\/jmap\n\nhttps:\/\/api.fastmail.com\/jmap\/session",
"position": [
1000,
-120
],
"parameters": {
"url": "https:\/\/api.fastmail.com\/jmap\/api\/",
"method": "POST",
"options": [],
"jsonBody": "={\n \"using\": [\"urn:ietf:params:jmap:core\", \"urn:ietf:params:jmap:mail\"],\n \"methodCalls\": [\n [\n \"Email\/set\",\n {\n \"accountId\": \"{{ $('Session').item.json.primaryAccounts['urn:ietf:params:jmap:mail'] }}\",\n \"create\": {\n \"newDraft\": {\n \"mailboxIds\": {\n \"{{ $json.draftsId }}\": true\n },\n \"keywords\": {\n \"$draft\": true\n },\n \"inReplyTo\": [\"{{ $json.metadata['message-id'] }}\"],\n \"references\": [\"{{ $json.metadata['message-id'] }}\"],\n \"from\": [{\n \"name\": \"\",\n \"email\": \"{{ $('Session').item.json.username }}\"\n }],\n \"to\": [{\n \"name\": \"{{ $json['to-friendly'] }}\",\n \"email\": \"{{ $json.to }}\"\n }],\n \"subject\": \"{{ $json.subject }}\",\n \"bodyValues\": {\n \"textBody\": {\n \"value\": \"{{ $json.message.content.replace(\/\\n\/g, '\\\\n') }}\"\n }\n },\n \"bodyStructure\": {\n \"partId\": \"textBody\"\n }\n }\n }\n },\n \"c1\"\n ]\n ]\n}",
"sendBody": true,
"sendHeaders": true,
"specifyBody": "json",
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth",
"headerParameters": {
"parameters": [
{
"name": "Content-Type",
"value": "application\/json"
},
{
"name": "Accept",
"value": "application\/json"
}
]
}
},
"credentials": {
"httpHeaderAuth": {
"id": "3IRsYkeB2ofrwQjv",
"name": "Fastmail"
}
},
"typeVersion": 4.2
},
{
"id": "f4ecb64a-c978-4aa3-943e-c4a7f0592b91",
"name": "gather data for draft email",
"type": "n8n-nodes-base.set",
"position": [
800,
-120
],
"parameters": {
"options": [],
"assignments": {
"assignments": [
{
"id": "78885ad0-fa62-407e-82de-f297190265be",
"name": "draftsId",
"type": "string",
"value": "={{ $json.id }}"
},
{
"id": "fcb31dde-0881-4b98-8bc2-e3e215148a5c",
"name": "to-friendly",
"type": "string",
"value": "={{ $('Get fields from source email').item.json.from.match(\/[^<]+\/)[0].trim().replaceAll(\/\\\"\/g, \"\") }}"
},
{
"id": "84c80af6-68dd-44bd-97ba-fde78a42e88a",
"name": "subject",
"type": "string",
"value": "=Re: {{ $('Get fields from source email').item.json.subject }}"
},
{
"id": "590e9856-9c6f-4d23-af42-8a0a1384ac00",
"name": "message.content",
"type": "string",
"value": "={{ $('OpenAI').item.json.message.content }}"
},
{
"id": "4f24e071-24e3-4101-a423-ad5bbcca9fc7",
"name": "metadata['message-id']",
"type": "string",
"value": "={{ $('Get fields from source email').item.json.metadata['message-id'] }}"
},
{
"id": "80c92734-0296-4299-9f98-15cc62e93d44",
"name": "to",
"type": "string",
"value": "={{ $('Get fields from source email').item.json.metadata['reply-to'].match(\/<([^>]+)>\/)[1] ?? $('Get fields from source email').item.json.from.match(\/<([^>]+)>\/)[1] }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "ca868672-85bd-4e2e-b2c6-6c6c69b78b24",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
-580,
-560
],
"parameters": {
"width": 493.9330818092735,
"height": 695.2489786026621,
"content": "## Workflow Description:\nThis n8n workflow automates the drafting of email replies for Fastmail using OpenAI's GPT-4 model. Here\u2019s the overall process:\n\n1. **Email Monitoring**: The workflow continuously monitors a specified IMAP inbox for new, unread emails.\n2. **Email Data Extraction**: When a new email is detected, it extracts relevant details such as the sender, subject, email body, and metadata.\n3. **AI Response Generation**: The extracted email content is sent to OpenAI's GPT-4, which generates a personalized draft response.\n4. **Get Fastmail Session and Mailbox IDs**: Connects to the Fastmail API to retrieve necessary session details and mailbox IDs.\n5. **Draft Identification**: Identifies the \"Drafts\" folder in the mailbox.\n6. **Draft Preparation**: Compiles all the necessary information to create the draft, including the generated response, original email details, and specified recipient.\n7. **Draft Uploading**: Uploads the prepared draft email to the \"Drafts\" folder in the Fastmail mailbox."
},
"typeVersion": 1
},
{
"id": "c4273cc2-1ac2-43f4-bcd1-7f42d3109373",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
-40,
-560
],
"parameters": {
"color": 3,
"width": 722.928660826031,
"height": 285.5319148936168,
"content": "## Prerequisites:\n1. **IMAP Email Account**: You need to configure an IMAP email account in n8n to monitor incoming emails.\n2. **Fastmail API Credentials**: A Fastmail account with JMAP API enabled. You should set up HTTP Header authentication in n8n with your Fastmail API credentials.\n3. **OpenAI API Key**: An API key from OpenAI to access GPT-4. Make sure to configure the OpenAI credentials in n8n."
},
"typeVersion": 1
}
],
"pinData": [],
"connections": {
"OpenAI": {
"main": [
[
{
"node": "Session",
"type": "main",
"index": 0
}
]
]
},
"Session": {
"main": [
[
{
"node": "Get Mailbox IDs",
"type": "main",
"index": 0
}
]
]
},
"Split Out": {
"main": [
[
{
"node": "Filter for drafts folder",
"type": "main",
"index": 0
}
]
]
},
"Get Mailbox IDs": {
"main": [
[
{
"node": "Split Out",
"type": "main",
"index": 0
}
]
]
},
"Email Trigger (IMAP)": {
"main": [
[
{
"node": "Get fields from source email",
"type": "main",
"index": 0
}
]
]
},
"Filter for drafts folder": {
"main": [
[
{
"node": "gather data for draft email",
"type": "main",
"index": 0
}
]
]
},
"gather data for draft email": {
"main": [
[
{
"node": "upload draft email",
"type": "main",
"index": 0
}
]
]
},
"Get fields from source email": {
"main": [
[
{
"node": "OpenAI",
"type": "main",
"index": 0
}
]
]
}
}
}How to Use an n8n Template
1
Create a New Workflow
Click "New Workflow" in your n8n dashboard to get started.
2
Copy & Paste Template
First, copy this template:
Click here to copy the JSON
.
Then, in n8n, click the three dots (···) → "Import from file" and paste the JSON code.
3
Customize the Nodes
Go through each node in the workflow to update inputs like spreadsheet IDs, email addresses, or message content. Adjust field mappings to match your data.
4
Grant Access
For nodes that connect to external apps (like Google Sheets or Slack), you'll need to grant access. Connect your accounts using OAuth or an API key and save the credentials in the node.
5
Test It
Run the workflow by clicking "Execute Node" for each step or "Run Once" for the whole thing. Check the right sidebar to inspect data and debug any errors (they'll show up in red).
6
Activate Workflow
Once everything works as expected, click the "Activate" toggle to turn your workflow on. You're all set!