Get organized
As emails come into your inbox, deal with them. Sort them into folders. This segments your data, requiring an attacker to know which folder to go to, or to take multiple steps to search for wanted information. Paired with archiving, it also ensures that what the hacker does compromise is limited and known for any future damage assessment. Sensitive information can also be removed from your inbox. For example, delete an email and save what you need to your hard drive or an external drive.
