You can exclude any preferred leads/profiles from your account so that no
messages or connection requests are sent during any campaigns.
There are three options where you can enable the button to exclude contacts.
Step 1: From your account, click on Contacts on the left side of the panel.
Step 2: Switch ON the button located on the far right side of Contacts name.
You can also access this feature within the Inbox page.
Please note: Once this feature is turned on for any of your contacts/leads they will not be able to receive any messages from you. Meaning they will be on your DND list within Alfred.