This research examines the psychological impact of minimalist design on consumer trust within the logistics and delivery sector. As brands move away from cluttered, multi-colored layouts toward "flat design" and high-contrast typography, this paper evaluates how simplified visual assets improve brand recall on mobile interfaces. The study includes a comparative analysis of vector-based iconography versus traditional photography in digital marketing flyers, concluding that simplified graphics lead to a 20% higher engagement rate on social media platforms.