Landline Remover - SaaS Application for SMS Marketing

About

Landline Remover helps businesses clean and optimize their contact lists by accurately identifying mobile, landline, and VoIP numbers. It verifies carrier types, flags and removes known litigators, and ensures compliance with state and federal Do Not Call (DNC) regulations. Ideal for SMS marketing, lead generation, and customer outreach, the tool improves deliverability, protects against compliance risks, and ensures that campaigns target the right audience effectively and efficiently.

Tech Stack

Key Features

• Built using Django, PostgreSQL, DRF, and HTMX, ensuring a fast and scalable web application.
• Designed Stripe-powered billing system, generating consistent $40k-$50k monthly sales.
• Achieved adoption by 5,000+ active users, supporting SMS marketing, lead generation, and compliance needs.
• Implemented real-time number classification (mobile, landline, VoIP) and compliance checks with DNC lists.
• Scaled system performance to deliver results under 100ms response times even on high-volume queries.
• Integrated Celery + Redis for handling millions of number verification tasks daily with high efficiency.
• Deployed on DigitalOcean with optimized infrastructure for reliability and cost efficiency.