How I can implement the E-Mail chatting feature in our web page.

It's important, to me, to point out that the CURRENT incarnation of WROX has no way of "stopping" the sales of the book. When Peer failed to pay for the printing services- the books became the propery of the printers. And the printers are selling the books to try and recoup their lost money.

Neither APRESS nor WROX(Wiley) Can stop Amazon, Gotop or anyone else from selling the book.