If you are a MSO user, you may login here:

Login
Avoid having to verify your email address,
and drop-off files to non-MSO users.
 

Anyone may perform the following activities:

Pick-up
Pick-up (download) a file dropped off for you.
 
MSO users: you may login with your username and password and send files to anyone, in or out of MSO.
Non-MSO users: you cannot log in, but can still send files to MSO users if you know their email address. Start by clicking the "Drop-off" button.
MSO users who wish someone outside MSO 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.
 
ZendTo is a service to make it easy for you to move files, including large files up to 20.0 GB, in and out of MSO.
 
How secure is ZendTo?

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