Political campaigns, Politico noted, are typically not required to preserve emails on their private server for long windows of time, and most messages are deleted within 30 to 90 days, unless steps are taken to preserve them.

What’s more, the Trump campaign did not do much to establish a plan to maintain those communications, according to a former campaign aide.

“You’d be giving us too much credit,” the former aide told Politico. “The idea of document retention did not come up. The idea of some formal structure did not come up.”