Politicians have to stop putting politically damaging material in e-mails. If you're going to lie to voters, then please do it safely by texting, calling directly by phone, or using a courier. Only in this way can Western democracy be saved for dishonest politicians. 

Let's face it. If politicians are honest they have nothing to fear from hackers who spill the beans. The reason hacking is so effective is that the subsequent leaks have been so painfully embarrassing. It's interesting that voters do not appear overly outraged by the hacks. It's mostly politicians who are complaining. The threat to democracy is really nothing more than a euphemism for a threat to their careers. 

The solution is simple. Either stop misleading voters or stop using emails.