I the case of only one cam maybe not. If you have several cams and only email enabled it will send you a summarized email every x minutes which cams and with pictures that were triggered since the last email.
Maybe you have a couple of very important cams you really want to know when something happens then you also add a rule for each cam. In the rule you write a message. For these cams with rules an email is sent instantly when motion is triggered.
However, in your case it seems that something went wrong in the spam session.
I assume your Notification for the email looks like this within the red rectangles. When you click on Test Email you should get a green icon for Email sender in the Event logs and receive an email. Do you have that?
That is the basic function. Now you should get a summary email every x minutes with pictures from all the cams that were triggered for motion detection.
These settings should not affect the notification.