Switching off email notifications
There are two ways to turn off email notifications - temporarily and permanently.
To temporarily turn off notifications, just pause email to all of your notification email addresses.
Pausing email to notification addresses
To pause notification email, head over to the notifications section of Account settings and click on the pause icon for each of you notification email addresses
More on pausing email addresses in this help article: Pausing email notifications
Bulk edit to remove all email addresses
To permanently turn off email notifications, bulk edit your tracks and remove all of the email notification addresses.
In the bulk edit dialogue click the delete icon for the current default notification email address
This leaves no notification email addresses
Click the Save these changes button and that's it - notifications for all of the tracks selected will only go to the notifications tab.
More on bulk editing of tracks in the help article: Bulk setting of notification options