The Great American Inbox Cleanout!

I am so horribly bad at keeping my Inbox clean. I hardly ever delete things. I don't know why. It's easy to just click "delete" and have a message disappear, but I don't always do that. I guess I think I might need the email later? But, really, do I need to keep FB messages, Google Alerts, and advertisements for months? It's become so bad that my Thunderbird program keeps asking if it can compact things to speed everything up.

Plus, I'm so slow at responding to emails. I read everything when i...