┌─────────────┐    ┌─────────────┐    ┌─────────────┐    ┌─────────────┐
│ Gmail       │───▶│ Filter by   │───▶│ Extract     │───▶│ Upload to   │
│ Trigger     │    │ Criteria    │    │ Attachments │    │ Google Drive│
└─────────────┘    └─────────────┘    └─────────────┘    └─────────────┘
                                                                │
                         ┌─────────────┐    ┌─────────────┐    │
                         │ Send        │◀───│ Apply Label │◀───┘
                         │ Notification│    │ & Archive   │
                         └─────────────┘    └─────────────┘

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}"

Gmail Trigger → Detect Invoice → Extract PDF → OCR/Parse → Save to Drive → Update Spreadsheet → Archive Email

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

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

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

// 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 }}"
      }
    }
  ]
}

// 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();
}

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
│                 │
└─────────────────┘

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

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

# 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