Implementing Java Mail Service

Hello,

we' d like to implement email-functionality through the portal. We would like every user to see his inbox and to be able to send mails to outside our domain.

I used standard iView com.sap.netweaver.coll.SendEMail for implementing the "send"-functionality. Although i cant see the mail system i created in systemlandscape in user mapping, i m quite surprised it works!

Every user is able to send email in his own name via our mail server mail.company.com.

Can you explain this phenomenon? How can I access the users inbox?

Thanks for your hints

Markus