As we’ve previously reported, Manafort – who is facing multiple charges of money laundering, bank fraud and illegal lobbying – was alleged to have contacted witnesses using encrypted messaging apps.
Foldering isn’t complicated. You make an email account and share the password to the account with the person you wish to communicate with. Then you write your message but crucially don’t send it. Instead, you save it as a draft.
The person you wish to communicate with logs into the account, reads the draft, deletes it, and then creates their own draft response.
You log in, read their draft, delete it, create your own draft message. And so on.
No emails ever get sent, they just get saved as drafts.
Perhaps the most famous case, until now, of foldering to surreptitiously communicate was the David Petraeus scandal, where the CIA director was forced to resign after being found leaking classified information to biographer Paula Broadwell, with whom he was having an affair.