WHY IT HAPPENS Wrong-file mistakes often come from similar names, old versions, autocomplete, or attaching before reviewing. BEFORE SENDING Open the file from the draft or link preview. Confirm title, version, date, content, and recipients. USE CLEAR NAMES Name files with topic, date, and version so the correct file is obvious. REMOVE OLD ATTACHMENTS If replying to a thread, check whether old attachments are still included. IF YOU SEND THE WRONG FILE Report it quickly if the file contains sensitive or confidential information.