Epiphany open page

[Rudra Banerjee <bnrj rudra yahoo com>]

Dear Friends,
I want epiphany to open a page,say example.com every time I start epy.
So I edited epiphany.desktop exec=epiphany --new-tab example.com

The problem is when I am opening an external link, it is opening
example.com and the link. 
so what I am looking for is to ask epiphany to open example.com only
when no epy window is already open; and when epy is already open, just
open the external link. 
Any easy way of doing this?
I am in epy3.4