John has all his family on Google Fi and he has created a special email address for everyone to use to send images. Leo says he can do that, but Google Photos has a shared album feature, and that would be far easier. So how does he download the images to his desktop? Leo says he could use Google Drive, which has a setting to backup photos automatically. He can then sync it back to his computer with the Google Drive app. It's for Windows and Mac, but they are working on a Linux version as well. But he should look around, because there's probably one on sourceforge or something.
The chatroom suggests InSyncHQ.