Here is my scenario:
I have 2 email accounts: admin@domain.com and bounce@domain.com.
I want to send email to all my users with admin@domain.com but then \"r
I was searching for the answer to the same question. There are more parts of the question, and more options.
For handling the bounced e-mail, I found a PHP class, purely in PHP, no compile or additional software installation needed if you have a PHP powered site. It is very easy to use.
If you are using cPanel, or InterWorx/SiteWorx, you can configure some of the addresses to handle the received e-mails with a script, for example a PHP script, so you can write your own handling with the aid of the mentioned class. Or of course still you can create ordinary e-mail accounts and retrieve the mails via POP3 or IMAP, and then interpret them. I think the first one is better, because it's direct, you don't have to use additional channels, like IMAP. Of course if you can't configure your mail server, or don't know how to do it, then the former is better for you.
Good luck! :)