Earlier quoted context omitted.
What were they emailing themselves, IP?
All sorts of things. Sometimes it's code or documentation/guides they wrote that they believe they're entitled to... Sometimes it's personal things they kept on their work computer/account.... Sometimes it's contact lists... Sometimes it's strategy docs they authored... Sometimes it's password files (which often mix personal and work creds). Sometimes it's whatever-they-can-think-of that might be of value on the shar…
What's the general way for an employee to retain access to those?