Email notifications have stopped across all accounts and actions, pointing to a global system issue. Possible causes include disabled platform notification settings, incorrect SMTP server configurations (credentials, host, port, encryption), a stopped email sending service, network/firewall blocks, or issues with your SMTP provider (downtime, blacklisting). To resolve, systematically check your application's global settings, verify SMTP configuration (including a test email), examine server logs for errors, ensure network connectivity to your SMTP server via firewall rules and DNS, and check your SMTP provider's status page. 

Hi ​@bgg, 

Welcome to Box Community and we’ll be assisting you in regards to Box notifications. 

I’ll be creating a new case and someone from Box Product Support team will reach out to you through email. 

Please keep an eye out and we will be in touch. 

Thanks for posting!