Unsubscribe links in your cold emails now point at the domain each email is sent from, at unsub. plus that domain. Before, senders shared one unsubscribe address, so a single blocklist hit on it reached everyone's mail. Ken sets this up for you on sending domains whose DNS it manages.
You can also put an unsubscribe link in the email body. In a campaign's Sequence, select text, press Insert link and pick Unsubscribe. Each recipient gets their own one-click link at send time, and Ken never wraps it in click tracking.
Prospects who open the link see a short page with their masked address and an Unsubscribe button. It names neither Ken nor your company. Opening the link alone unsubscribes nobody, so security scanners can't.
When a mail app sends the unsubscribe request by email, Ken now adds the contact to your blocklist too. Before, those requests were dropped.