List-Unsubscribe adds a native unsubscribe option in inbox UI. Learn how it works and why it reduces spam complaints.
The List-Unsubscribe header allows inbox providers to show an unsubscribe option directly in the email interface. This gives recipients a clean way to opt out instead of reporting spam.
Implementing it properly can reduce complaint rates and protect reputation. It’s especially important for bulk or newsletter-style sending where frequency can trigger fatigue.