Maybe you have a confirmation autoresponder campaign that you want to set to go to the client, not now, but a certain date in the future. You can do that by setting the days delay to a "negative number"
Simply find the contact you'd like to subscribe the autoresponder to in the contacts area inside 1Shoppingcart.
Click on the "Autoresponders" tab and then on "Subscribe New Autoresponder"
Select the autoresponder and then type in a negative number correlating with how many days you want to wait before sending autoresponder. So, if you want it go out in a week from now, type in "-7".
We actually have a tool called the "Negative Number Generator" which allows you to see how many days from today a certain date is.