Built a self-hosted email marketing platform as an alternative to expensive SaaS tools like Mailchimp.

The system runs on your own server — no monthly fees, no email limits, full data ownership.

Key features: • Campaign manager with CSV import, contact deduplication, and segmentation • Email personalization with dynamic variables and text spinning for unique messages • Multi-SMTP rotation for better deliverability • Domain warmup system with progressive sending limits • Scheduled sending (business hours, weekday targeting) • Open/click tracking with analytics dashboard • CAN-SPAM compliant unsubscribe system • Multi-user admin panel with role-based access • REST API for external integrations • Queue processing with rate limiting

Stack: PHP 8.3, SQLite, Postfix, Apache, Cron