marco

Introducing the SF-26. Our 2026 challenger 🔴

"Proton reads incoming mail in transit" NO, Proton Mail does not inspect your incoming emails while they are in transit. Breakdown: In transit: Inbound emails arrive over TLS encryption (STARTTLS/SMTPS) from the sender's server to Proton's. The server-to-server connection is encrypted, so Proton cannot decrypt or read the content mid-transit. On arrival at Proton servers: - Proton-to-Proton: Full end-to-end zero-knowledge encryption from the start (Proton never sees content). - Non-Proton inbound (e.g. Gmail): TLS delivers plaintext to Proton's edge there's a brief in-memory scan for spam/viruses/malware (temporary server access) then immediately encrypted with zero-access storage using your key. Per Proton's privacy policy: "Such inbound messages are scanned for spam in memory, and then encrypted and written to disk. We do not possess the technical ability to scan the content of the messages after they have been encrypted." So there's no ongoing reading or post-encryption access, but a brief plaintext window for filtering on non-E2E inbound emails.