The one-click policy is actually about sending the list-unsubscribe header so the email client can render an opt-out button.
An unsubscribe link in the body of an email can have a confirm step.
In fact if you are serving a B2B audience it is essential that you do, since an increasing number of security services like Barracuda, Fortra, etc. auto-click every link in the email body to check for phishing. If you have one-click unsubscribe links in your email body, those people will be constantly unsubscribed without their knowledge.
An unsubscribe link in the body of an email can have a confirm step.
In fact if you are serving a B2B audience it is essential that you do, since an increasing number of security services like Barracuda, Fortra, etc. auto-click every link in the email body to check for phishing. If you have one-click unsubscribe links in your email body, those people will be constantly unsubscribed without their knowledge.