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by subway
2892 days ago
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Is there a way to encrypt message headers while using IMAP? My understanding of Protonmail's argument (not that I agree with it) is they encrypt the full message, including headers upon accepting it. Based on my understanding of IMAP, you're effectively looking at a new protocol once you do everything needed to decrypt headers on the client-side. |
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Other than the Received, Delivered-To and Return-Path headers added by the intermediate MTA servers, every other header in the original message could be encryped, along with the message body when it's delivered to the server (or appended via IMAP).