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Automate Gmail with intelligent workflows - attachment management, email organization, auto-archiving, and Google Drive integration
Gmail Workflows
Automate Gmail with intelligent workflows for attachment management, email organization, and Google Drive integration. Based on n8n's 7,800+ workflow templates.
Overview
This skill helps you design and implement Gmail automation workflows that:
Automatically save attachments to Google Drive
Organize emails with smart labeling
Archive processed emails
Send notifications via Slack/Email
Track email metrics
Core Workflow Templates
1. Gmail Attachment Manager
Purpose: Automatically extract attachments from emails and save to Google Drive
Workflow Steps:
┌─────────────┐ ┌─────────────┐ ┌─────────────┐ ┌─────────────┐
│ Gmail │───▶│ Filter by │───▶│ Extract │───▶│ Upload to │
│ Trigger │ │ Criteria │ │ Attachments │ │ Google Drive│
└─────────────┘ └─────────────┘ └─────────────┘ └─────────────┘
│
┌─────────────┐ ┌─────────────┐ │
│ Send │◀───│ Apply Label │◀───┘
│ Notification│ │ & Archive │
└─────────────┘ └─────────────┘
Configuration:
trigger:
type: gmail_new_email
filters:
has_attachment: true
from: ["*@company.com", "*@vendor.com"]
subject_contains: ["invoice", "report", "contract"]
actions:
- extract_attachments:
file_types: [pdf, xlsx, docx, csv]
max_size_mb: 25
- upload_to_drive:
folder_path: "/Attachments/{year}/{month}"
naming_pattern: "{filename}_{sender}_{date}"
create_folder_if_missing: true
- organize_email:
apply_label: "Processed/Attachments"
mark_as_read: true
archive: true
- notify:
channel: slack
message: "New attachment saved: {filename} from {sender}"
Best Practices:
Use specific sender filters to avoid processing spam
Set file size limits to prevent storage issues
Use date-based folder structure for easy retrieval
Enable duplicate detection to avoid redundant uploads
2. Invoice Auto-Archiver
Purpose: Automatically collect and organize invoices from email
Workflow Steps:
Gmail Trigger → Detect Invoice → Extract PDF → OCR/Parse → Save to Drive → Update Spreadsheet → Archive Email
Configuration:
trigger:
subject_patterns:
- "invoice"
- "bill"
- "statement"
- "付款"
- "发票"
processing:
- detect_invoice:
methods: [subject_keywords, attachment_name, sender_domain]
- extract_data:
fields: [invoice_number, amount, date, vendor, due_date]
use_ocr: true
- save_to_drive:
folder: "/Finance/Invoices/{year}/{vendor}"
naming: "{date}_{vendor}_{amount}"
- update_tracker:
spreadsheet: "Invoice Tracker"
columns: [Date, Vendor, Amount, Invoice#, Status, File_Link]
- archive:
label: "Finance/Invoices"
star: true
3. Client Communication Organizer
Purpose: Automatically organize client emails by project/client
Configuration:
rules:
- name: "Client A Emails"
condition:
from_domain: "clienta.com"
actions:
- apply_label: "Clients/Client A"
- forward_to: "team-a@company.com"
- save_attachments: "/Clients/Client A/{subject}"
- name: "Project X Updates"
condition:
subject_contains: ["Project X", "PX-"]
actions:
- apply_label: "Projects/Project X"
- add_to_task: "Project X Board"
- notify_slack: "#project-x"
- name: "Urgent Requests"
condition:
subject_contains: ["URGENT", "ASAP", "紧急"]
is_unread: true
actions:
- apply_label: "Priority/Urgent"
- send_sms: "+1234567890"
- move_to_inbox: true
4. Email Analytics Dashboard
Purpose: Track email metrics and generate reports
Metrics to Track:
daily_metrics:
- emails_received: count(inbox)
- emails_sent: count(sent)
- response_time_avg: avg(reply_time)
- unread_count: count(unread)
- attachment_count: count(has_attachment)
weekly_report:
- top_senders: group_by(from, count)
- busiest_hours: group_by(hour, count)
- label_distribution: group_by(label, count)
- response_rate: sent / received
automation:
- schedule: "every Monday 9am"
- output: Google Sheets
- notify: Slack #email-metrics
Implementation Guide
Using n8n
// n8n Workflow: Gmail to Google Drive
{
"nodes": [
{
"name": "Gmail Trigger",
"type": "n8n-nodes-base.gmailTrigger",
"parameters": {
"pollTimes": { "item": [{ "mode": "everyMinute" }] },
"filters": { "labelIds": ["INBOX"] }
}
},
{
"name": "Filter Attachments",
"type": "n8n-nodes-base.if",
"parameters": {
"conditions": {
"boolean": [{
"value1": "={{ $json.hasAttachment }}",
"value2": true
}]
}
}
},
{
"name": "Get Attachments",
"type": "n8n-nodes-base.gmail",
"parameters": {
"operation": "getAttachments",
"messageId": "={{ $json.id }}"
}
},
{
"name": "Upload to Drive",
"type": "n8n-nodes-base.googleDrive",
"parameters": {
"operation": "upload",
"folderId": "your-folder-id",
"name": "={{ $json.filename }}"
}
}
]
}
Using Google Apps Script
// Gmail to Drive Automation
function processNewEmails() {
const threads = GmailApp.search('has:attachment is:unread');
const targetFolder = DriveApp.getFolderById('FOLDER_ID');
threads.forEach(thread => {
const messages = thread.getMessages();
messages.forEach(message => {
const attachments = message.getAttachments();
attachments.forEach(attachment => {
// Save to Drive
const file = targetFolder.createFile(attachment);
// Rename with date and sender
const newName = `${Utilities.formatDate(message.getDate(), 'GMT', 'yyyy-MM-dd')}_${message.getFrom()}_${attachment.getName()}`;
file.setName(newName);
});
// Mark as processed
message.markRead();
thread.addLabel(GmailApp.getUserLabelByName('Processed'));
});
});
}
// Set up trigger
function setupTrigger() {
ScriptApp.newTrigger('processNewEmails')
.timeBased()
.everyMinutes(5)
.create();
}
Common Workflow Patterns
Pattern 1: Filter → Process → Organize → Notify
Email arrives
│
▼
┌─────────────────┐
│ Apply Filters │ → Skip if doesn't match
│ (sender, subject│
│ attachment) │
└────────┬────────┘
│
▼
┌─────────────────┐
│ Process Content │ → Extract data, attachments
│ │
└────────┬────────┘
│
▼
┌─────────────────┐
│ Organize │ → Save files, apply labels
│ │
└────────┬────────┘
│
▼
┌─────────────────┐
│ Notify │ → Slack, email, SMS
│ │
└─────────────────┘
Pattern 2: Batch Processing
schedule: "daily at 6am"
steps:
1. Collect all unprocessed emails from last 24h
2. Group by category (invoices, reports, misc)
3. Batch upload to respective Drive folders
4. Generate summary report
5. Send daily digest to stakeholders
Pattern 3: Conditional Routing
conditions:
- if: attachment_type == "pdf" AND subject contains "invoice"
then: route_to_finance_folder
- if: from_domain in ["important-client.com"]
then: priority_handling + immediate_notification
- if: attachment_size > 10MB
then: save_to_large_files_folder + skip_backup
- default:
then: standard_processing
Troubleshooting
Common Issues
Issue
Solution
Attachments not detected
Check MIME type filters, increase trigger frequency
Duplicate files
Enable deduplication by hash or filename
Rate limits
Reduce trigger frequency, use batch processing
Permission errors
Re-authorize OAuth credentials
Large files failing
Set size limits, use chunked upload
Security Considerations
OAuth Scopes: Request minimal permissions
gmail.readonly for reading
gmail.modify for labels/archive
drive.file for Drive access
Data Privacy:
Don't log email content
Use secure storage for credentials
Implement retention policies
Access Control:
Limit who can modify workflows
Audit automation activities
Use separate service accounts
Output Example
Daily Email Report:
# Email Activity Report - 2026-01-30
## Summary
- Emails Received: 47
- Emails Sent: 23
- Attachments Processed: 12
- Average Response Time: 2.3 hours
## Attachment Processing
| File | Sender | Saved To | Time |
|------|--------|----------|------|
| Invoice_Jan.pdf | vendor@co.com | /Finance/Invoices | 09:15 |
| Report_Q4.xlsx | team@company.com | /Reports/Q4 | 10:30 |
| Contract_v2.docx | legal@client.com | /Contracts | 14:22 |
## Labels Applied
- Finance/Invoices: 5 emails
- Projects/Active: 12 emails
- Clients/Priority: 8 emails
## Pending Actions
- 3 emails require manual review
- 2 large attachments need approval
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