I use Thunderbird and have filters for most things, even for myself. I have many e-mail addresses I use for different things.

In my gmail, I have folders and subfolders. I have a folder with my name, emails I sent to myself go there.

I use [<tag>] in subject so that they go to the proper subfolder in my folder, etc.

I use http://hnnotify.com/ to get notifications when someone replies to my comments on Hacker News, by the way.