Few people listen to me as a mix/mastering engineer when I say WeTransfer is the best for sending stem files (thank you to those who do). Dropbox is great, but I don't want to add your folder or highlight every file and hit download. WeTransfer is an easy zipped file that ALWAYS sends the download notification. Don't even get me started on Google Drive which is probably the worst for file transfer. Please, just use WeTransfer. It's free and easy. Music Threads