Help finding old messages

[Tom G.]

Ok now I know this sounds crazy but I have soured this site to find where old messages are stored. once I read a message from someone it falls out of my notifications and then for the life of me I cannot find where these messages are stored! can someone please guide me to old messages? just to be clear, someone sent me a message yesterday and now that I have read it I cant go back and find it. Grrrr