Creating an opt-in is one of the first things you’ll be thinking about as you build the foundation for your online business. If you choose to share files, they need a reliable place to “live” so that your subscribers can access them digitally. For small files and modest audiences, something as simple as Dropbox will work just fine. For multimedia and large audiences, you’ll probably want to use a more sophisticated service like Amazon S3.
Dropbox
Box
Senduit
Filedropper
Hightail
GoogleDrive
OneDrive
AWS Amazon S3
