imap-smtp-email

# IMAP/SMTP Email Tool

Read, search, and manage email via IMAP protocol. Send email via SMTP. Supports Gmail, Outlook, 163.com, vip.163.com, 126.com, vip.126.com, 188.com, vip.188.com, and any standard IMAP/SMTP server.

## Configuration

Create `.env` in the skill folder or set environment variables:

```bash
# IMAP Configuration (receiving email)
IMAP_HOST=imap.gmail.com          # Server hostname
IMAP_PORT=993                     # Server port
IMAP_USER=your@email.com
IMAP_PASS=your_password
IMAP_TLS=true                     # Use TLS/SSL connection
IMAP_REJECT_UNAUTHORIZED=true     # Set to false for self-signed certs
IMAP_MAILBOX=INBOX                # Default mailbox

# SMTP Configuration (sending email)
SMTP_HOST=smtp.gmail.com          # SMTP server hostname
SMTP_PORT=587                     # SMTP port (587 for STARTTLS, 465 for SSL)
SMTP_SECURE=false                 # true for SSL (465), false for STARTTLS (587)
SMTP_USER=your@gmail.com          # Your email address
SMTP_PASS=your_password           # Your password or app password
SMTP_FROM=your@gmail.com          # Default sender email (optional)
SMTP_REJECT_UNAUTHORIZED=true     # Set to false for self-signed certs
```

## Common Email Servers

| Provider | IMAP Host | IMAP Port | SMTP Host | SMTP Port |
|----------|-----------|-----------|-----------|-----------|
| 163.com | imap.163.com | 993 | smtp.163.com | 465 |
| vip.163.com | imap.vip.163.com | 993 | smtp.vip.163.com | 465 |
| 126.com | imap.126.com | 993 | smtp.126.com | 465 |
| vip.126.com | imap.vip.126.com | 993 | smtp.vip.126.com | 465 |
| 188.com | imap.188.com | 993 | smtp.188.com | 465 |
| vip.188.com | imap.vip.188.com | 993 | smtp.vip.188.com | 465 |
| yeah.net | imap.yeah.net | 993 | smtp.yeah.net | 465 |
| Gmail | imap.gmail.com | 993 | smtp.gmail.com | 587 |
| Outlook | outlook.office365.com | 993 | smtp.office365.com | 587 |
| QQ Mail | imap.qq.com | 993 | smtp.qq.com | 587 |

**Important for Gmail:**
- Gmail does **not** accept your regular account password
- You must generate an **App Password**: https://myaccount.google.com/apppasswords
- Use the generated 16-character App Password as `IMAP_PASS` / `SMTP_PASS`
- Requires Google Account with 2-Step Verification enabled

**Important for 163.com:**
- Use **authorization code** (授权码), not account password
- Enable IMAP/SMTP in web settings first

## IMAP Commands (Receiving Email)

### check
Check for new/unread emails.

```bash
node scripts/imap.js check [--limit 10] [--mailbox INBOX] [--recent 2h]
```

Options:
- `--limit <n>`: Max results (default: 10)
- `--mailbox <name>`: Mailbox to check (default: INBOX)
- `--recent <time>`: Only show emails from last X time (e.g., 30m, 2h, 7d)

### fetch
Fetch full email content by UID.

```bash
node scripts/imap.js fetch <uid> [--mailbox INBOX]
```

### download
Download all attachments from an email, or a specific attachment.

```bash
node scripts/imap.js download <uid> [--mailbox INBOX] [--dir <path>] [--file <filename>]
```

Options:
- `--mailbox <name>`: Mailbox (default: INBOX)
- `--dir <path>`: Output directory (default: current directory)
- `--file <filename>`: Download only the specified attachment (default: download all)

### search
Search emails with filters.

```bash
node scripts/imap.js search [options]

Options:
  --unseen           Only unread messages
  --seen             Only read messages
  --from <email>     From address contains
  --subject <text>   Subject contains
  --recent <time>    From last X time (e.g., 30m, 2h, 7d)
  --since <date>     After date (YYYY-MM-DD)
  --before <date>    Before date (YYYY-MM-DD)
  --limit <n>        Max results (default: 20)
  --mailbox <name>   Mailbox to search (default: INBOX)
```

### mark-read / mark-unread
Mark message(s) as read or unread.

```bash
node scripts/imap.js mark-read <uid> [uid2 uid3...]
node scripts/imap.js mark-unread <uid> [uid2 uid3...]
```

### list-mailboxes
List all available mailboxes/folders.

```bash
node scripts/imap.js list-mailboxes
```

## SMTP Commands (Sending Email)

### send
Send email via SMTP.

```bash
node scripts/smtp.js send --to <email> --subject <text> [options]
```

**Required:**
- `--to <email>`: Recipient (comma-separated for multiple)
- `--subject <text>`: Email subject, or `--subject-file <file>`

**Optional:**
- `--body <text>`: Plain text body
- `--html`: Send body as HTML
- `--body-file <file>`: Read body from file
- `--html-file <file>`: Read HTML from file
- `--cc <email>`: CC recipients
- `--bcc <email>`: BCC recipients
- `--attach <file>`: Attachments (comma-separated)
- `--from <email>`: Override default sender

**Examples:**
```bash
# Simple text email
node scripts/smtp.js send --to recipient@example.com --subject "Hello" --body "World"

# HTML email
node scripts/smtp.js send --to recipient@example.com --subject "Newsletter" --html --body "<h1>Welcome</h1>"

# Email with attachment
node scripts/smtp.js send --to recipient@example.com --subject "Report" --body "Please find attached" --attach report.pdf

# Multiple recipients
node scripts/smtp.js send --to "a@example.com,b@example.com" --cc "c@example.com" --subject "Update" --body "Team update"
```

### test
Test SMTP connection by sending a test email to yourself.

```bash
node scripts/smtp.js test
```

## Dependencies

```bash
npm install
```

## Security Notes

- Store credentials in `.env` (add to `.gitignore`)
- **Gmail**: regular password is rejected — generate an App Password at https://myaccount.google.com/apppasswords
- For 163.com: use authorization code (授权码), not account password

## Troubleshooting

**Connection timeout:**
- Verify server is running and accessible
- Check host/port configuration

**Authentication failed:**
- Verify username (usually full email address)
- Check password is correct
- For 163.com: use authorization code, not account password
- For Gmail: regular password won't work — generate an App Password at https://myaccount.google.com/apppasswords

**TLS/SSL errors:**
- Match `IMAP_TLS`/`SMTP_SECURE` setting to server requirements
- For self-signed certs: set `IMAP_REJECT_UNAUTHORIZED=false` or `SMTP_REJECT_UNAUTHORIZED=false`