You may wish to temporarily disable notifications (disable email).
This is just a few steps.
Administration => My profile settings => Messaging
- There are multiple columns of message types, example below is Email. Unchecking here will just disable for the one category. If that is what you want, then just do that, otherwise, continue on.
Scroll to the bottom of the page, look for the Checkbox by 'Temporarily disable notifications'
- Now the Column for Email will be Grayed out, Checkbox is not UnCheckable