Hi Virtus,

You can enable email uploads to all folders by clicking the Admin Console > Enterprise Settings > Content & Sharing tab will be where you will find how to enable email upload:https://support.box.com/hc/en-us/articles/360043693254-Enabling-email-uploads-for-your-enterprise

Here are the instructions for uploading files through email:

• https://support.box.com/hc/en-us/articles/360043697534-Upload-to-Box-Through-Email

Happy to help!