Unsubscribes are much more than best practice - it's legally mandated. The risks for you from a penalty and reputational risk point of view just aren't worth it. It's why Tall Bob provides you with the unsubscribe tools, regardless of whether you send via Klaviyo or Tall Bob. With our integration, you are able to sync opt-out data back to Klaviyo and build a segment to see who has unsubscribed from your messages.