At that point not all PCs were also mail servers and so,В the need became evident to link servers as mail hosting systems to one another. That's when POP3 or "post office protocol" was adopted and implemented to make it happen!
As emails are sent, the messages sit on the server until the client opens them. Hence, the reason why hosting servers such as G MAIL, Yahoo, AOL and so on were created... all of which have a "letter box"which holds the e mails.
So, what's spam?
Well, although its a tasty canned meat product sold at your local grocery store...in the online world it's known as a form of unwanted or junk mail which almost exclusively targets e mail accounts.
No, it doesn't come in cans.
NO! Don't try to eat it for a snack!!
Spammers are sneaky. They sometimes try and include malware in their messages which can take over your computer and enable these spammers to send messages out of your outbox pretending to be from you. However, these messages often times carry viruses which can severly damge computers.
This is an example of why e amil host severs must remain alert and shut down individuals and orginizations who participate in these practices. At times this can cause servers to shut down while they clean house. These "shut downs" can last for a few minutes or a few hours. During these cleaning sessions there may be a delay in sending and receiving e mails. For this reason many people have multiple e mail accounts so, in the event one is down they are still able to send and receive personal and business related messages.
How do pictures get sent?
It seems the picture is much bigger than the tiny little wire in the back of my computer...how does it fit through??
Great question! Is it a majic trick?
No, there's no abra-ca-dabra involved in sending pictures! When images are uploaded the computer disassembles the images into text and code.
For example: that new car you keep looking at online is quite obviously a car when you look at it. However, the computer sees it as a series of numbers and letters. When the images are sent from your computer to a friends the image is broken down into ways the computer understands. Then, puts it back together when it reaches your friends computer so it shows up in a way that we(humans) understand.
Not to worry. If you go ahead and purchase that car shown on line you won't be driving off with a brand new letter "J" when you go to pick it up!
The format i which the pictures are sent are referred to as "MIME" or "multiple internet mail extensions".
Our PC's do all of the hard work by breaking down and re assembling our pictures for us...all we have to do is click and enjoy!