My house is always a mess, so I have no recommendations about that. (I don't care, we're comfortable with our clutter and dirty dishes)
I'll touch on email, which I think is a big one at home and at work. Whatever email program you have, it has a way to direct messages from appearing in your inbox to appearing directly in another folder you set up. So set up some folders and rules! This can vary a lot, but I'll give you a couple of examples I use.
For my personal email, I have two folders set up titled "Music" and "Retail". All of my band, venue, ticket, and other music news gets directed into that Music folder and not into my inbox. Same with Retail updates like sales at X store, travel deals, product updates, whatever I've signed up for in the past, goes into this folder. Then when I have time, I look through those folders but my inbox stays relatively clean with emails that are active or need attention.
Same idea for work, as there are always emails I need, but don't need to take action on right away (or at all). Those get directed to a folder. Other ones to other folders. Pick some categories. If you decide they're too broad or too narrow, it's easy enough to adjust. The only stuff that I let get through directly to my inbox are emails from co-workers and clients that I need to (possibly) take action on.