Post you link your Gmail account you can still manage preferences for getting your Gmail Documents by editing your consent against categories in the following ways:
Step 1. Navigate to the Menu.
Step 2. Tap on 'Linked Account'.
Step 3. Tap on 'Gmail'.
Step 4. Disable the toggle button next to the specific category you no longer want to receive documents from.
By disabling the toggle button for a category, Zoop Wallet will not import any new documents you receive in that category from your Gmail account going forward. However, the documents initially added for that category will still be available in Zoop Wallet.