: Because video files are often too large for direct email attachments, they are frequently shared as "cloud attachments"—links that allow recipients to download the file from a server.
While .mp4 files themselves are generally safe, you should remain cautious of files from unknown sources: Cloudmail (3) mp4
: You can play this file using standard media players such as VLC, Windows Media Player, or QuickTime. : Because video files are often too large
: The "Cloudmail" prefix is often used by third-party mail applications or browser extensions when saving attachments directly to local storage. Usage and Handling Windows Media Player