Sorry but there is now way you can select which email to go through or not. Unless of course you delete it's service book and then add it back after the work day Silly right?
The only way to do that is create a profile where you set up your personal email with no notifications at all -- Tune and its LED Flashing notification. For sure you won't be bugged about needing to check your email since your device won't alert you of new messages.