Send large files or multiple files using's messenger box. Simply use the box on the home page or log into your account to be directed to your feed. Select "upload files" or drag-n-drop your file(s) to the box. Choose the files you would like to include and select "open". The fill in the recipients email, message title, and add comments to the message. When you have composed your message, hit the "Share" button to complete the first message in your file conversation