Best way to clear inbox clutter without losing old messages?

I used to have the same problem — thousands of old emails slowing me down. I found a simple solution on https://45kilo.com/: move older emails to a dedicated archive that’s indexed and searchable. I set a rule that anything older than six months gets archived automatically, with tags for projects and clients. Now my inbox is clean, but I can still retrieve any old message in seconds. It’s reduced stress, improved productivity, and I’ve never lost an important email.