Does MPP block all tracking?

**Mail Privacy Protection** blocks IP-based location tracking and open timing but doesn't eliminate all tracking. It pre-fetches email images through proxy servers, so opens register for all emails whether opened or not, but click tracking still works.

What **MPP** blocks: accurate open rates, recipient IP addresses, open timestamps, device type detection via IP, and geographic location from IP. Your open data becomes unreliable for **MPP**-enabled recipients.

What **MPP** doesn't block: link clicks (recipients still visit your server), unsubscribe actions, reply behavior, conversion events on your website, and purchase activity. Shift measurement strategy toward these engagement signals that remain accurate regardless of privacy features.