Design and implement a small and simple email server using the concept of web based information system. Your system would perform given tasks to facilitate the users:

o Sign in or sign up: Already registered users could be able to sign in the system using username and password (stored in the database). A new user could be able to register (sign up) with the system providing some basic profile information such as, name, username, password, gender, date of birth etc.
o Show the list of users (only the user name/ID) already registered in the system.
o A user could be able to send a message to another existing user using the username/ID. The message could go to the inbox of the recipient. The recipient could be able to see the message from the inbox.
o A user could be able to see his/her own messages from the inbox.
o A user could be able to delete a message from the inbox
o A user could be able to update his/her profile
o Implement any additional feature such as, sent item, message subject field, trash box, sending to multiple recipients etc.