How do people put happy faces into emails?

[Carol]

[Empty]

Usually if you type the symbols colon hyphen close bracket without spaces it will create the smile automatically.

Like this :-)

My emails do this automatically.

[Daniel]

Usually They Do it By Typing this Into the Emails Usually When you Type it Will Recognize it as a Smile and A Smile Face Will Be Put In

[vobor]

For many years there are the smiley faces happy, but in recent years they have evolved. However, there is an easy way to insert emoticons using the keyboard of your computer.
I found a good explanation that suits your case on http://adf.ly/UTYXG