This. At Toyota corporate, we had a meeting with a lawyer and the lawyer instructed in the event of an investigation (e.g. bad floor mats), provide all of the emails and documents. Make everything easily searchable, and keep emails for 3-4 years. People think that hiding evidence from your lawyer makes things better but according to the lawyer, it actually hurts the case by not being able to have information. So save everything! The Toyota I.T. department must’ve heard something different because outlook now erases all emails older than 90 days.