You can configure your MDA to deliver mail for all these different addresses to the same inbox. What I did for a while was have 2 inboxes: personal mail and com

You can configure your MDA to deliver mail for all these different addresses to the same inbox. What I did for a while was have 2 inboxes: personal mail and commercial. All the tagged emails went to the Commercial inbox. Either way my mail client (Mail.app) can easily search accross Inboxes and/or present unified views if I actually want everything together.