I am working on a client/server system that allows the user to send a message to another user (which is already registered on the server, and has their username stored in a dictionary on the server) and that message will be stored, somehow, and can be accessed by the other user upon them logging in and entering the appropriate command to check their inbox.
It is a broad question but I am at a loss at how to implement this, are there any modules or methods that would allow me to do this?