I need something that can filter out spam. And that can ideally handle looking at a subject line and if it had a pre-assigned code, like BLOWFISH SUB, could move that mail directly to a particular mailbox. And again, ideally, could auto-respond with an acknowledgement. And can work off-line, so I can try to slog through some of this backlog of e-mail when I'm in a cafe, or on a plane. Help?
Do I need Eudora? Or will Eudora Light do? Or the MacOS Mail program? I know nothing on this subject, and I suspect I have a big mental block about it, but the time has surely come for me to just get over it -- educate me, please?