While PowerTalk was generally an interesting system, a combination of design features made it frustrating to use. For instance, the addressing system is so deeply embedded into the core of the system that simply typing in a new address is an ordeal. First the user clicks on a button, selects the address type, types it in, and then finally clicks codice_1 to have it appear in the message. Disk usage is also a problem because each message is stored as a separate file, requiring 1 kB or more of space in an era where 40 MB and 80 MB disks are still common. Thus a few hundred messages are enough to fill the free space on the drive. Backing up email was likewise almost impossible as a side-effect of the design; the mail was spread out over the network, some of it remote and inaccessible.