The present disclosure relates to systems and methods for transmitting and displaying private messages securely using a mobile device. The mobile device provides a user interface which is displayed on a mobile device while a messaging application is displayed on the mobile device's display. A private messaging applet runs within the keyboard region of a mobile device display, and receives and displays private messages from within the keyboard region of the mobile device display. The private message is displayed by initially obfuscating the entire message, and, based on detecting a user's contact with the display, displaying a smaller portion of the private message in relation to the location of the user's contact with the display. The private message is automatically deleted from the mobile device after the user removes contact with the display. The private messaging applet allows a user to remove a sent private message from a private messaging server.