Any employee is a fool for thinking making permanent records of things using company resources will remain private. You're on holiday or otherwise unavailable

Any employee is a fool for thinking making permanent records of things using company resources will remain private. You're on holiday or otherwise unavailable and someone needs some details for some obscure project you're working on? Crack open their email! Those accounts and everything else belong to your employer and if it suits their purposes to go poking around your email or IMs, then they will.