I would believe that you could use e-mail so long as it is secured. That doesn't mean password protection a Word file. I would go stronger and encrypt the e-mail itself and use GOOD passwords, not a dictionary word or the director's name. Go alpha/numeric and symbol if you want, the longer the better.
A difficult part here might be getting all the directors on board and capable of handling these requirements. Encrypted PDFs might be better than a PGP program if they prove tough enough.
_________________________
AndyZ CRCM
My opinions are not necessarily my employers.
R+R-R=R+R
Rules and Regs minus Relationships equals Resentment and Rebellion. John Maxwell