Different users collaborating in a folder can set their own specific folder-level email notifications for certain actions taken on the folder they joined (if allowed by the folder owner). However, please be advised that you cannot trigger email notifications to yourself for actions you triggered such as upload.
If users are uploading in a folder that is shared with others, collaborators can set and enable the notification in the
folder settings to receive notification of activities such as
upload, download, delete, & comment by others in that folder. For details on how to set this notification, please take a look at this article for details.:
https://support.box.com/hc/en-us/articles/360043696014-Understanding-Box-Folder-Settings#emailnotifications
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