Labels:text | poster | screenshot | bottle OCR: THREE MODELS OF MESSAGE ACCESS. Message Stores Changes are. Mail Is retrieved Mail is uploaded by client: Mail is retrieved to server, to be processed by client which processed and stored and stores and stored on server. processed copies of locally. the mail. Clients Offline Online Disconnected Figure 2. The message access transaction can be divided into three models: offline, online, and disconnected. The main difference between the three revolves around where the mail is actually read or processed and where the mail is stored.