<p>In modern digital communication, protecting sensitive information during transmission has become increasingly important. This project proposes a secure web-based messaging system that supports encrypted communication and controlled file sharing with time-restricted access. The platform encrypts messages and files before transmission so that only authenticated recipients can retrieve the shared data through secure credentials such as tokens or passwords. Unlike traditional file-sharing systems that store data permanently, the proposed platform allows the sender to define the access duration for each shared file. After the specified time limit expires, the file is automatically removed from the system to prevent long-term storage or unauthorised reuse. The system also integrates security mechanisms that scan attachments, links, and messages to detect potential malware or harmful content. If suspicious activity is identified, access to the content is restricted to protect users. By integrating encryption, temporary access control, automated file removal, and threat detection features, the proposed solution enhances confidentiality and provides a safer environment for digital communication and file exchange.</p>