It is very possible that there could have been some form of email available, and what was shown in the episode was the contemporary format. Keep in mind, shows and movies are taped/filmed at least months before they aired on TV.
TMI - LONG EXPLANATION:
I worked at a company people might recognize as TI, that made the "Professional Computer" as opposed to the IBM "Personal Computer". There were TV ads for it with star/comedian Bill Cosby showing how much faster LOTUS 1-2-3 ran on the Professional Computer, side-by-side. It had just one major drawback though... it didn't say "IBM" on it.
By and large, company and campus email existed well before the 1982-83 time frame of those new things, but was limited by the mainframe terminals available. Before there were PCs, there were monochrome Commodore PET computers (slightly preceded the APPLE II - those had optional color displays!) costlmg about one-fifth what ONE IBM terminal cost, so companies and universities were installing five of them instead of one IBM or DEC/VAX terminal. The real drawback to the PET? It had a rectangular keyboard, NOT the usual QWERTY modern keyboards. But they WERE cheap, so 2-finger typing was the rule, and that was in the mid to later 1970s.
In the early 1980s, I had an ATARI computer that used game cartridges to play Space Invaders, Centipede and Pac-Man, or ran a more advanced BASIC from a cartridge, just like Pac-Man, but it was better than the APPLE II BASIC... Accessories included modems and printers so you could connect with the big services like CompuServe and Prodigy, and check the stock market, plus send mail and buy/sell orders to your broker, or play Adventure or Empire against other online users.
That capability had then become available to ordinary (but somewhat tech-savy) people.
Here is when the wizards controlling the big centralized computers rapidly lost the control to distributed computing powered by Microsoft/INTEL and APPLE/Motorola.
Ironicly, Microsoft is now pushing for *cloud storage and computing* and running programs and apps from any/all of the distributed computing devices, (Pads, tablets, smart phones, etc., basicly new terminals), and back the world goes to wizards and large centralized server systems... spelled c-l-o-u-d.
*snicker*
That way, they get paid monthly or annually for people that might be using their intellectual property (programs/apps!), plus paying more for the high speed internet connections, (including wifi).
The more things change, the more they stay the same.
Only now, Microsoft will be getting paid instead of IBM... and you really cannot consider your data, mail, photographs, or interactions to be *private* any more.
The King is dead, long live the King!
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