I go through my documents and regularly clean out anything older than seven years. This includes emails.
Gmail’s search functionality makes this relatively easy:
older_than:7y
| Keyword | Example Usage |
|---|---|
after: |
after:2004/04/16 |
before: |
before:2004/04/18 |
older: |
older:2004/04/18 |
newer: |
newer:2004/04/19 |
older_than: |
older_than:2d |
newer_than: |
newer_than:4w |
Thanks to https://it.fitnyc.edu/kb/how-to-filter-mail-older-than-a-certain-date-in-gmail/ for the overview.