I want to develop a chat box for my website like facebook. Is it possible?
You should be more specific. Of course it's possible, Facebook has one. A lot of other sites do too.
There are lots of 3rd party options available, but I'm don't know of any specific ones.
What should i do then?
I need a chatting system for my users. The message should reach to their inbox if they are unavailable. I dont have message box yet in my system,
I made one many years ago that was php based as far as post/query/display that was inside a div tag. Then I just used JS to reload the div every second. I'm sure there are many ways to do it.
That about covers things. Before this thread gets any SPAM posts