Servlets :: Initialization With Different Scope / Context

I want to initialize my servlet based on the scope of my application.

For example, I have multiple admins with their respective email address.

I want to perform action within my servlet based on the given environment.

Would this be the right approach, if I set the admin email addresses in my web.xml as init-param:

<servlet>
<servlet-name>ServletName</servlet-name>
<servlet-class>com.mkyong.ServletDemo</servlet-class>
<init-param>
<param-name>admin1</param-name>

[Code] .....

Now if I am in the admin 1 environment, I would initialize my servlet with request parameter admin=1 and the servlet should load email address of admin 1 and similarly when in the environment 2, should load the servlet with admin 2.

call environment 1:
/servlet/Demo?admin=1
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException{

[Code] .....

I could do the same by putting the email address of the respective admin as request param value, but i don't want to the email address to appear in the url.