Add Gmail SMTP back as a provider option

Switch from SMTP to HTTP APIs (Resend/SendGrid)

Fix silent JS errors and enable multi-file attachment selection

Make column parsing dynamic

Ultra-dynamic templates with multi-placeholder support for highly personalized campaigns

Added Intent-driven dynamic template scaling to both Desktop and Mobile Web views

Integrated professional cybersecurity application template into Campaign Builder

Initial commit with modern GUI, automated progress tracking, and mobile responsiveness