SOS Online Backup is a great option to backup a lot of photos, quickly, since it’s one of the fastest online backup services on our list. And the encryption SOS has is fantastic. It gives two options when choosing an encryption key – UltraSafe and UltraSafe Max.
While in both cases, SOS employees don’t have access to your key, but with UltraSafe Max, a separate password is required to login. And as a plus for Facebook users, photos from the site and other account data is safely uploaded.
Coming to its web interface, SOS can share files through email. But, photos or videos can’t get previewed through its Internet app.
Same goes for the iOS and Android mobile apps. Though images cannot get previewed, you can backup mobile data to the cloud server.