email alerts

Hi Mark, 

Welcome to Box Community and thanks for your post in the forum! 

To receive email alerts when someone shared a file with you, 

1. Go to your desired folder > More Options> Settings 
2. Scroll down a bit and in Email and Notifications section you can check Uploads to get notified when your collaborator uploads a file in your folder. 
3. And don't forget to click on Save Changes 

Enabling email notifications through your folder settings will allow you receive notifications without having to login to the Web-App.

Hope it helps! Let me know if you have questions. 

Thanks for your participation in the Community!