I have 100% of my incoming mail forwarded to a Gmail account that I strictly use for archiving. Hence... if you wanted to follow suit... you might create a new email account called
Archive.Weerez935@gmail.com. I only forward the email... I do not automatically delete it from my inbox.
Then... as I read email... I am ruthless about deleting anything and everything that I do not need. I keep an incredibly small amount of emails around... usually less than 5 or so. At this moment, my email account only has 2 emails in it. I can delete ruthlessly because I know that I can log into my gmail archive account... and search for any email that I have ever received (10's of thousands)... and have the results in milliseconds.
So... lets say I just ordered something new from the Apple store. I would immediately get an order confirmation... so I would leave it my inbox. The following day... I might get an email that they are processing my order... so I will then delete the original order confirmation and leaved the lastest. The next day I might get an email that it shipped... so I delete all prior emails and just keep the shipping confirmation. Finally, once the item arrives at my door... I delete the last email.
But doing this... my email inbox is almost always near empty. If I need to scroll to see more emails... I know that I am out of control... so I go on a deleting rampage.
Occasionally, I will create folders for specific reasons. For example, I create folders for my upcoming travel. As I make airline, hotel, rental car reservations, I put them into the folder for that specific trip. Because my email uses IMAP protocol... I always have them with me on my iPhone, iPad or MBA during my trip. When the trip is complete... I trash the entire folder.
Having a nearly empty mailbox is a very "free-like" experience. That lack of clutter just feels great. At the same time... I have access to any email I ever received.
/Jim