How do I add an existing subscriber to an additional list? I am using asp.net api. I am able to add new subscribers to the list using code like this:


However, if I try to subscribe a user that is already in exact target to a new list, they dont get added.

saveOption.SaveAction = SaveAction.UpdateAdd; does not help.

1 Answer 1


In my code I created a new GUID.

string strGUID = System.Guid.NewGuid().ToString();

I then assigned this new id as the subscriber key sub.SubscriberKey = strGUID; //required //may not be active in all accounts //some choose to set this to email address

Well, once I changed it to be the user's email address instead of a new GUID is worked!

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