Corporate Multiple Personality Syndrome
When a person involved in a business organization holds multiple roles and genuinely begins to think that they themselves are different people by virtue of the roles. Often happens when a shareholder is a director who is also a director of an entity that is a shareholder. People with this syndrome can be caught emailing themselves with the to/from fields being populated by the different roles they hold. Victims of this syndrome often cite bizarre legal theories to substantiate spending time emailing themselves in official capacities.
from: johnasmith@companymail.com
to: johnasmith@personalmail.com

Dear John A Smith, Shareholder:

Enclosed please find our latest annual report.

With Best Regards,

John A Smith (the same guy as the recipient)
CEO

Secretary or other clerk reading this exchange: "This guy has Corporate Multiple Personality Syndrome."