- The ability to add custom icons.- Very useful when you receive an unknown email (it has a very suspicious look). It's like "maybe it's some sort of scam?" However, after clicking through it just reveals that it is not a scam at all. If this is important, I would only turn off notifications or just block them.I'm sure if they wanted to, they can find out how often I turn notifications on/off. So I have no way to see what kind of emails I am missing. And they definitely don't care about my privacy, since it's only one option (and I've tried many others!). I like that I can use the app on the go via my phone and that it's easy to use. I can also access my files from anywhere. I can also share files with friends and family. I can't find anything I dislike about it. I have used other apps and they were not as good as Zivver. Emailing is so much easier with Zivver. I also like that I can access my files anywhere.