[MistahKoala]

> These interns don't need access to every email she sends to another MP

How do you know this? The Members themselves are best placed to determine the type and scope of this. Not all MPs will share and delegate, and not all interns will have such facilities extended to them.

The prescribed way is to have staff undergo vetting, then be assigned network privileges (with whichever delegated rights are specified). But this is the real world, where we know that trusted individuals in teams share credentials.

None of this precludes MPs (at least, those not on Government payroll) from setting up and using third-party accounts for their sole use - which is exactly what MPs do.