🔥 Top Features & SEO Capabilities

• 🔄 Smart SMTP Rotation & Load Balancing: Connect unlimited SMTP servers (Gmail, Outlook, AWS SES, SendGrid, Zoho, Custom Postfix). The engine automatically rotates through your list to distribute sending volume, acting as a powerful SMTP warm-up tool.
• Advanced Anti-Spam Technology: Includes subject line randomization (spinning) and variable time delays (e.g., 10-30 seconds between emails) to mimic human behavior and bypass spam filters.
• 🎨 HTML Email Editor & Personalization: Full support for HTML templates. Boost open rates using dynamic mail-merge tags like {name}, {email}, and {date} for hyper-personalized outreach.
• 📊 Real-Time Analytics Dashboard: Monitor your bulk email campaign live. Track sent counts, failed attempts, and server responses in a detailed log console.
• Private & Secure: 100% Client-side execution. Your mailing lists and SMTP credentials are stored locally in your browser (LocalStorage) and are never transmitted to third-party servers.

📸 Interface & Workflow

1. SMTP Server Management

Add multiple SMTPs with TLS/SSL support for rotation.

2. HTML Content Builder

Import recipients and design responsive HTML emails.

3. Anti-Spam Randomizer

Configure subject shuffling and sending delays.

4. Live Sending Console

Watch progress bars and connection logs in real-time.

🛠️ Technical Specifications

• Core: Vanilla JavaScript (ES6+) for maximum performance.
• UI Framework: Tailwind CSS via CDN for responsive, modern design.
• Connectivity: Direct SMTP connection simulation via client-side logic.
• Data Persistence: HTML5 window.localStorage API.

How to Use

1. Clone the repository to your local machine.
2. Open index.html in any modern web browser (Chrome, Edge, Firefox, Brave).
3. Navigate to the SMTP Tab to configure your sender accounts.
4. Paste your recipient list (one per line) in the Content Tab.
5. Hit Start Campaign to begin the bulk mailing process.

🔍 Search Engine Keywords (SEO)

Bulk Email Sender, Mass Mailer Software, Free Email Marketing Tool, SMTP Rotator Script, Unlimited Email Sender, Cold Email Outreach Tool, Newsletter Blaster, HTML Email Template Sender, JavaScript SMTP Client, Browser-based Mailer, Anti-Spam Email Tool, Email List Manager, High Deliverability Mailer, Open Source Marketing Automation.

Disclaimer: This tool is intended for legitimate email marketing, newsletters, and educational purposes. Please comply with CAN-SPAM, GDPR, and your SMTP provider's Terms of Service.