If you are a Sumitomo user, you should login above to avoid having to verify your email address,
and be able to drop-off files to non-Sumitomo users.

Anyone may perform the following activities:

Drop-off
Drop-off (upload) a file for a Sumitomo user (email verification required).
Pick-up
Pick-up (download) a file dropped off for you.
 
Sumitomo users: you may login with your username and password and send files to anyone, in or out of Sumitomo.
Non-Sumitomo users: you cannot log in, but can still send files to Sumitomo users if you know their email address. Start by clicking the "Drop-off" button.
Sumitomo users who wish someone outside Sumitomo to send them files, can make it a lot easier for them by logging in and clicking "Request a Drop-off". That saves the other person having to prove who they are. The request created will be valid for 7 days.
 
SumiBox is a service to make it easy for you to move files, including large files up to 20.0 GB, in and out of Sumitomo.
 
How secure is SumiBox?

Files are automatically deleted from SumiBox 14 days after you upload them.