Unverified50% confidenceFactExact time
Starting with iOS 15 and macOS Monterey, Apple introduced the Mail Privacy Protection feature, which loads remote content in emails through a proxy server to hide the user's real IP address and reading behavior.
1
Sources
50%
Confidence
Long-term
Relevance
8/4/2026
First Seen
Sources
苹果Mail发送非iCloud邮件时为何连接iCloud服务器？原因解析
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