Good day,

I've fully migrated to Proton Drive as my dedicated cloud storage system. I know this feature doesn't necessary exist in other platforms, so it may give Proton Drive an exclusive feature.

Description: File extension-based exception. Similar to the (.gitignore) a file will contain any exception to a particular file extension, not folder; it wouldn't make sense having a folder in a cloud you want to ignore. Using this file, the system ignores or removes all files with a specific extension.

Functionality: The root the directory will contain a (.ignore), for simplicity sake, file that contains all the file extensions the user wishes the system to ignore. When a user moves a file into the drive of that extension, it gets moved to the folder but not to the cloud if it has that extension.

Rational: Personally, I use Proton Drive for all my storage, even to work on files while they're stored in the cloud. However, one instance that keeps occurring is when I am working on the files, these programs tend to create a lot of lock-based files. One program in particular, 3DCoat, continuously create "auto-save" files that are very useful but are as heavy as the model being created. So, the Drive application consistently detects a new one being created and uploads it. However, once you're done running the program, those files are delete, so the Drive application goes and deletes them afterward. Similar instances exist when working on documents and interactive development environments. So, if there's a root file containing extension that can be ignored because there's no need to keep those file type, it will prevent the Drive from continuously running in the background and uploading useless files.

I understand this may be a big ask and I'm sure I'm not the only one who would benefit this feature, so if the feature is able to be implemented, that's be magnificent!