Can't receive verify mail

Hi there, 

Welcome to Box Community and glad to help! 

Your email address is not in our suppression list and to ensure that you'll correctly receive emails from Box. Kindly run these suggested troubleshooting steps.

Hope it works! 

Thank you for your reply.

However, the email address I want to register is not mine, but my colleague's.

I think that I probably need to contact the administrator with that email address, but who should I contact?

Thank you.