Thru Dropbox is a web-based file upload tool that allows external users — without requiring a Thru account or registration — to upload large files to Thru account holders via a simple web form. Key capabilities include: - No sign-up required for external senders; files can be received from anyone - Links to Thru Dropbox pages can be embedded in email signatures or placed on company websites - Supports no file size limits for uploads and transfers - Encrypted messaging and file transfer to protect confidential data - Antivirus/virus scanning on all uploads and transfers - Password authentication and custom expiration settings for sent files - Activity tracking with full audit logs, including time stamps and IP address records - Checkpoint restart to maximize successful file uploads - Multiple upload protocol support: Java, HTML5, and ActiveX