How does MPP affect location tracking?
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Before Mail Privacy Protection (MPP), location tracking in email worked by recording the IP address at the moment a subscriber opened your email. Your email platform could infer approximate location from that IP. Not GPS-precise, but close enough for geo-targeted content, local event promotions, or optimizing send times by timezone.
Apple Mail's MPP broke that. When MPP is active, email images (including tracking pixels) load through Apple's proxy servers, not from the subscriber's device. Your platform sees Apple's IP address, not the subscriber's. You get no usable location signal for MPP-affected opens.
Given that Apple Mail has roughly 50-60% of email clients on iOS and macOS, this affects a significant portion of any consumer list. The location data you see for those subscribers is essentially meaningless.
Workarounds exist, but they all require explicit data collection. (If you want to understand how open tracking works in the first place, that context helps here.) Ask for location or timezone at signup. Use a preference center where subscribers can tell you their region. Build timezone logic into your platform based on declared data rather than inferred IP. Click-based tracking still captures an IP at click time (MPP only prefetches images, not link clicks), but click rates are much lower than opens, so the sample is thin.
The honest answer is that IP-based location tracking for email was always approximate. MPP accelerated the need to collect location data properly, through permission, not inference. If you want to send timezone-aware campaigns, ask people what timezone they're in. It works better anyway.
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