if you'd used the s3 management console, you'd know that it uses the same API as everything else, and so has to do the same list objects by page / delete a page

if you'd used the s3 management console, you'd know that it uses the same API as everything else, and so has to do the same list objects by page / delete a page dance just like everybody else... the only bulk optimization i can recall is the server side transfers for sync...