As the title suggests, I can't see what my sent messages are.
I am using the reply button at the bottom right hand corner of my PMs to reply to people and they are indeed receiving them properly. Is there some glitch I don't know?
Make sure your option is set to save sent PMs by default.
*Gear icon in top right of screen* > Options > Messages & Notifications > Private Messaging > "Save a copy of sent messages in my Sent Items by default"