I feel the the email goes both ways. I keep my email clean so I feel comfortable remembering and seeing only what's still important. It's a coping mechanism to deal with my default behavior, kinda like a checklist
I have my work email tidy, with rules for everything to move mails to correct folders, inbox only contains mails that are new and I'll need to read or action on.
Then my 7 private email accounts are total chaotic mess