To remove a lead from a Smartlead campaign in Clay, you'll need to use the Lead ID. Here's how to get it:
1. First, use the "Lookup Lead in Campaign" action in Clay.
2. Enter the email address of the lead you want to remove.
3. Run the lookup action to get the Lead ID.
4. Use this Lead ID in the "Remove Lead from Campaign" action.
Remember, the Lead ID is typically obtained from a previous "Lookup Lead in Campaign" action. This ensures you're removing the correct lead from the campaign.