Dropbox’s desktop app has its own notification center separate from your OS.

If the app-level settings don't stop the alerts, you can use your operating system's settings:

If you only want to stop notifications from a specific shared folder:

Go to Dropbox.com and log in.

Don't forget the emails! Dropbox often sends activity summaries and marketing emails that clutter your inbox.

Go to System Settings > Notifications , find Dropbox, and toggle Allow Notifications to Off .

The Dropbox desktop app is the most common source of "ping fatigue," especially if you’re working in shared folders where files are updated frequently.