Is it possible to send the url link of a completed survey back to the customer to allow them to update the entries?

Is it possible to send the url link of a completed survey back to the customer to allow them to update the entries?

I have some detailed questionnaires which will be sent to customers to submit.

Some questions are complex and the customer might want to get back to it at a later stage to update it. 
is this possible? 

Pls advise, this is a critical feature I need to implement.

Thanks