It becomes a necessity asap
Yes. But I do not believe for a second someone with the sense of entitlement a Clinton has, would reduce themselves to communicating via draft. because “what difference does it make”
With endless possible email addresses there could be one for each unique recipient, or for any given subject.
If records still exist it will be at the other end of the communication. OR, if the email was transmitted over her cellular provider’s network, they would have a record.