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Durham University

Computing and Information Services

Frequently Asked Questions

List of FAQ categories


+How do external partners/collaborators use ZendTo?

External collaborators can exchange files with staff within the University without needing an account. Instructions vary according to whether they want to pick up or drop off files, and these can be found at

+How do I access ZendTo?

ZendTo is available at from any web browser, both internal to and external from the University.

Instructions for using it can be found on CIS' web pages at

+How does ZendTo work?

Using ZendTo, Durham University staff can drop-off files for, or pick-up files from, anyone, whether the recipient/sender is inside or outside the University. Recipients are identified by email and receive a message advising them that a file is waiting for them. The email provides information so only they can access it.

External colleagues can also exchange files with University staff provided they know the Durham University email address they wish to send to.

Files dropped off in ZendTo are available for recipients to collect for 14 days before they are automatically deleted from the system.

+What is the largest file I can send or receive?

The maximum upload size is 20GB per drop-off or pick up. If you are transferring multiple files consider zipping them into one file for ease.

+What is ZendTo?

ZendTo is a secure file transfer service which makes it easy to transfer files up to 20GB in size. As there is a 25 MB limit on messages that can be sent and received through your University email account, if you want to send multiple files or a single large file as an attachment ZendTo is the option to choose.

+Who can use Zendto?

Current academic staff, professional support service staff and postdoctoral researchers at the Durham University with a valid CIS user name and password. These staff may send and receive files to anyone, inside or outside the University in line with Information Security and IT usage policies. For more information about these polices see