Answer:
It is the electronic version of junk mail or a salty meat in a can.
You get many of me, but never enough. After the last one, your life soon will snuff. You may have one of me but one day a year, When the last one is gone, your life disappears.
Two in a whole and four in a pair. And six in a trio you see. And eight's a quartet but what you must get. Is the name that fits just one of me?
Long and slinky like a trout, never sings till it's guts come out.
Describes a mysterious region and a stylish pair of shorts.
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?