You can tell Maccy to ignore all copied items:

To customize the behavior, check 'Preferences.' window.

To clear all items including pinned, select Clear in the menu with OPTION (⌥) pressed, or press SHIFT (⇧) + OPTION (⌥) + COMMAND (⌘) + DELETE (⌫).

To clear all unpinned items, select Clear in the menu, or press OPTION (⌥) + COMMAND (⌘) + DELETE (⌫).

The item will be moved to the top with a random but permanent keyboard shortcut.

To pin the history item so that it remains on top of the list, press OPTION (⌥) + P.

To see the full text of the history item, wait a couple of seconds for tooltip.

To delete the history item, press OPTION (⌥) + DELETE (⌫).

To choose the history item and paste without formatting, press OPTION (⌥) + SHIFT (⇧) + ENTER, or OPTION (⌥) + SHIFT (⇧) + CLICK the item, or use OPTION (⌥) + SHIFT (⇧) + n shortcut.To choose the history item and paste, press OPTION (⌥) + ENTER, or OPTION (⌥) + CLICK the item, or use OPTION (⌥) + n shortcut.To select the history item you wish to copy, press ENTER, or click the item, or use COMMAND (⌘) + n shortcut.SHIFT (⇧) + COMMAND (⌘) + C to popup Maccy or click on its icon in the menu bar.

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