Unverified50% confidenceFactExact time
TLS encryption only protects the link over which emails are transmitted between servers; once an email reaches a server it is decrypted and stored in plaintext, and email service providers can still read its contents.
1
Sources
50%
Confidence
Long-term
Relevance
9/4/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedMost mainstream email service providers use server-side encryption (encryption at rest), where emails are encrypted but the provider holds the decryption keys and can read the plaintext of emails at any time.79% similarUnverified在中转代理模式下，中转服务器在服务器端解密（TLS终止）读取明文内容，因此平台在技术层面对所有对话内容拥有完整读取权限75% similarUnverifiedGoogle's Transparency Report shows that more than 90% of inbound Gmail messages are already transmitted using TLS encryption.72% similarVerifiedDKIM通过非对称加密为邮件头部添加数字签名，验证邮件在传输过程中未被篡改71% similar
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