Why Choose This Project?

Newsletter signup forms are common targets for spoofing and fake signups by bots, which can flood databases with fake email IDs or malicious scripts. Attackers may also try to use signup forms to inject spoofed email addresses that later compromise the organization’s reputation (e.g., sending spam disguised as newsletters).
This project ensures a secure and spoof-resistant newsletter signup form, validating emails against SPF, DKIM, and DMARC policies, along with bot detection and input sanitization.

What You Get in This Project

• A secure signup form integrated into a website.

• Real-time email validation and spoof detection before subscription.

• CAPTCHA/anti-bot checks to prevent fake/bulk signups.

• Admin dashboard to manage subscribers safely.

• Option to send verified confirmation emails only to legitimate addresses.

Technology Stack

Key Features

How It Works

1. User Submits Email

   • User enters email in newsletter signup form.

   • CAPTCHA ensures human interaction.

2. Validation & Spoof Detection

   • Regex checks format (e.g., user@example.com).

   • System checks SPF, DKIM, and DMARC records for authenticity.

3. Double Opt-In Process

   • If email passes checks → a verification link is sent.

   • User must confirm via the link before subscription is completed.

4. Secure Storage

   • Verified emails are stored in the database.

   • Spoofed/fake/bot entries are logged but not added.

5. Admin Management

   • Admin can view/export verified subscribers.

   • Suspicious signups flagged in reports.

Security Features

• SPF/DKIM/DMARC Validation → Prevent spoofed addresses from being subscribed.

• CAPTCHA & Bot Detection → Blocks mass automated signups.

• CSRF & XSS Protection → Prevents malicious script injection.

• Double Opt-In Emails → Only real users confirm subscription.

• Audit Logs → Tracks spoofed/bot attempts.

• Role-Based Access → Only admin can manage subscriber data.