How to get user information in a e-mail form?

First I must to say sorry because I made the same question in the general Category and I don’t know if that was the better place to do it, either I don’t know if this is the correct place to do it, if it isn’t, please tell me where I can ask for this.

I’m making an application with java and tomcat that must send an e-mail to several people for aprove o reject some data sended in the e-mail by pussing some HTML button to send back the request to my tomcat application. I must to know who has requested the approval or the rejection.

The e-mail is received in Lotus Notes 6.55. And I want to know how to get the e-mail address (mail to) or the user name of Lotus Notes with JavaScript or with another method (may be some Lotus Script?) on the HTML e-mail’s body received.

Thanks in advance.