A new feature has been released today 1/xx/2017 where Publisher can make two types of imports.
First type of import is called Append. This type of import will update recipients gender and age in datapend. To download csv file example ( type: append) click here.
Second type of import is called Verify. This type of import is simply importing and no functionality is tied to it. To download csv file example ( type: verify) click here .