The best way to contact us is via email at Support@Zend.To.
All donations should be sent by Paypal. If you need to pay by cheque or check then make it out to "J.K.Field". If you need an invoice then do ask.
Send your donations to
|Electronics and Computer Science|
|University of Southampton|
If you have a question about ZendTo or its use, please first trycontact me directly and I will help you out where possible. I respond to every email you send me so you can be sure of a response, even if it is brief. Don't expect much if I think you have clearly not looked at all the documentation above!