Email List Automation Script

A Python script that creates email addresses from names, saves them to a file, and sends them via email using Gmail's SMTP service.

📁 Repository: email-list-automation

✨ Features

• File Creation: Generates email addresses by appending "@gmail.com" to names
• File Reading: Reads email addresses from a text file
• Email Sending: Sends the list of emails via Gmail with user confirmation
• User Interaction: Prompts user before sending emails
• Error Handling: Includes try-catch blocks for email operations

📋 Prerequisites

• Python 3.x
• Gmail account with App Password enabled

🔧 Setup

1. Enable Gmail App Password

1. Enable 2-Factor Authentication on your Google Account
2. Generate App Password at: https://myaccount.google.com/apppasswords
   • Select "Mail" → Choose device → Generate
   • Copy the 16-character password

2. Configure Script

Edit these variables in the script:

sender_email = "your_email@gmail.com"          # Your Gmail address
sender_password = "your_app_password_here"     # Your 16-char App Password
receiver_email = "recipient@example.com"       # Who receives the email

3. Customize Name List

Edit the lines list to add your names:

lines = [
    "John",
    "Jane",
    "Mike",
    "Sarah"
]

🚀 How It Works

Step 1: File Creation

Creates abc.txt with email addresses:

John@gmail.com
Jane@gmail.com
Mike@gmail.com
Sarah@gmail.com

Step 2: File Reading

Reads the created file and displays emails in console.

Step 3: Email Sending

• Prompts user for confirmation
• Connects to Gmail SMTP server
• Sends email containing all addresses from the file
• Uses secure SSL connection (port 465)

📊 Sample Output

File 'abc.txt' created successfully!
Emails read from file:
John@gmail.com
Jane@gmail.com
Mike@gmail.com
Sarah@gmail.com

Do you want to send the email? (yes/no): yes
Email sent successfully!

📁 File Structure

email-list-automation/
├── email_script.py          # Main script
├── abc.txt                 # Generated email file
└── README.md              # This file

⚠️ Security Notes

CRITICAL: Protect Your Credentials

# ❌ UNSAFE (in production code):
sender_password = "your_app_password_here"

# ✅ SAFE Alternatives:
# Option 1: Environment variables
import os
sender_password = os.getenv("GMAIL_APP_PASSWORD")

# Option 2: User input
sender_password = input("Enter your app password: ")

# Option 3: .env file (using python-dotenv)

Before Committing to Git:

1. Replace real email addresses with placeholders
2. Remove or replace actual passwords
3. Add sensitive files to .gitignore:

   *.txt
   .env
   

🐛 Troubleshooting

Issue	Solution
Authentication failed	Verify App Password is correct
File not found	Script must be run from correct directory
SMTP connection error	Check firewall/internet connection
Permission denied	Ensure you can write to current directory
SSL errors	Try port 587 with starttls() instead

🔄 Alternative: Port 587 (TLS)

If SSL doesn't work, modify the sending function:

with smtplib.SMTP("smtp.gmail.com", 587) as server:
    server.starttls()  # Upgrade to TLS
    server.login(sender_email, sender_password)
    server.send_message(message)

📝 Customization Options

1. Change Email Domain

# Replace "@gmail.com" with any domain
file.write(line + "@company.com\n")
file.write(line + "@yahoo.com\n")

2. Add More Names Dynamically

# Read names from user input
names = []
while True:
    name = input("Enter name (or 'done' to finish): ")
    if name.lower() == 'done':
        break
    names.append(name)

3. Format Email Content

# Customize email body
email_content = "Employee Email Directory:\n\n"
for index, email in enumerate(emails, 1):
    email_content += f"{index}. {email}"

📈 Use Cases

• Creating contact lists from name databases
• Sending email directories to HR departments
• Generating test email accounts
• Educational demonstrations of file I/O and email automation

🧪 Testing Tips

1. Test with your own email as receiver first
2. Send to a test inbox before production use
3. Check spam folder if email doesn't arrive
4. Verify file permissions in your directory

📄 License

For educational purposes only. Ensure compliance with:

• Gmail's Terms of Service
• Anti-spam regulations (CAN-SPAM Act)
• Data privacy laws (GDPR, CCPA)

🔍 Quick Start Checklist

• Enable 2FA on Google Account
• Generate App Password
• Update script with your credentials
• Modify name list as needed
• Run script in safe environment
• Verify email receipt

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⚠️ Reminder: This script contains hardcoded credentials. Always use secure methods for handling passwords in production environments. Never commit sensitive information to version control systems.