Can I turn off those assignment submission notification emails?

Yes, you can!

Actually, we went and turned them off for you. Populi now lets individual faculty users enable/disable the email notifications for when a student submits and assignment. The default for this setting is No—so if you're tired of those emails, you don't need to do anything: they're already turned off! But if you want to turn them back on, follow these steps... 

• Click your name in the upper right of the screen (by the help link)
• Choose Settings
• On the Settings screen, click the Notifications tab
• There's a setting there called Notify me about assignment submissions. Check Yes and Save your settings...
• ...and voilá, assignment submission emails are turned back on

But if you don't want those emails any more, you don't need to do anything!