but the data I receive is stored in a FTP... I am not sure how to get a FTP URL for this data?You can have mailwizz import a CSV from a remote url, which means you don't have to go through the hassle of uploading it via ftp.
use a script on location to put the files into the directory that is accessible by mwzbut the data I receive is stored in a FTP... I am not sure how to get a FTP URL for this data?