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:

# IMAP Configuration (receiving email)
IMAP_HOST=imap.gmail.com          # Server hostname
IMAP_PORT=993                     # Server port
[email protected]
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)
[email protected]          # Your email address
SMTP_PASS=your_password           # Your password or app password
[email protected]          # Default sender email (optional)
SMTP_REJECT_UNAUTHORIZED=true     # Set to false for self-signed certs

Common Email Servers

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.

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

Options:

• --limit \x3Cn>: Max results (default: 10)
• --mailbox \x3Cname>: Mailbox to check (default: INBOX)
• --recent \x3Ctime>: Only show emails from last X time (e.g., 30m, 2h, 7d)

fetch

Fetch full email content by UID.

node scripts/imap.js fetch \x3Cuid> [--mailbox INBOX]

download

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

node scripts/imap.js download \x3Cuid> [--mailbox INBOX] [--dir \x3Cpath>] [--file \x3Cfilename>]

Options:

• --mailbox \x3Cname>: Mailbox (default: INBOX)
• --dir \x3Cpath>: Output directory (default: current directory)
• --file \x3Cfilename>: Download only the specified attachment (default: download all)

search

Search emails with filters.

node scripts/imap.js search [options]

Options:
  --unseen           Only unread messages
  --seen             Only read messages
  --from \x3Cemail>     From address contains
  --subject \x3Ctext>   Subject contains
  --recent \x3Ctime>    From last X time (e.g., 30m, 2h, 7d)
  --since \x3Cdate>     After date (YYYY-MM-DD)
  --before \x3Cdate>    Before date (YYYY-MM-DD)
  --limit \x3Cn>        Max results (default: 20)
  --mailbox \x3Cname>   Mailbox to search (default: INBOX)

mark-read / mark-unread

Mark message(s) as read or unread.

node scripts/imap.js mark-read \x3Cuid> [uid2 uid3...]
node scripts/imap.js mark-unread \x3Cuid> [uid2 uid3...]

list-mailboxes

List all available mailboxes/folders.

node scripts/imap.js list-mailboxes

SMTP Commands (Sending Email)

send

Send email via SMTP.

node scripts/smtp.js send --to \x3Cemail> --subject \x3Ctext> [options]

Required:

• --to \x3Cemail>: Recipient (comma-separated for multiple)
• --subject \x3Ctext>: Email subject, or --subject-file \x3Cfile>

Optional:

• --body \x3Ctext>: Plain text body
• --html: Send body as HTML
• --body-file \x3Cfile>: Read body from file
• --html-file \x3Cfile>: Read HTML from file
• --cc \x3Cemail>: CC recipients
• --bcc \x3Cemail>: BCC recipients
• --attach \x3Cfile>: Attachments (comma-separated)
• --from \x3Cemail>: Override default sender

Examples:

# Simple text email
node scripts/smtp.js send --to [email protected] --subject "Hello" --body "World"

# HTML email
node scripts/smtp.js send --to [email protected] --subject "Newsletter" --html --body "\x3Ch1>Welcome\x3C/h1>"

# Email with attachment
node scripts/smtp.js send --to [email protected] --subject "Report" --body "Please find attached" --attach report.pdf

# Multiple recipients
node scripts/smtp.js send --to "[email protected],[email protected]" --cc "[email protected]" --subject "Update" --body "Team update"

test

Test SMTP connection by sending a test email to yourself.

node scripts/smtp.js test

Dependencies

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