Before you start
Things you need to know:
Supported file types: You can send these file types in a chat session:
png,jpg,gif,bmp,mp3,mp4,txt,html,pdf,docx,pptx,xlsx,ics,epub,rtf,doc-xls-pps
Send files in a chat
On the chat interface, select the chat session you want to reply to — this opens the chat window.
Select the paperclip icon.
In the popup file window, choose the file you want to send and select open. You now see the attachment above the message box. If you selected the wrong file, select the trashcan icon and start again.
Select Send.