this post was submitted on 26 Feb 2025
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Tuta is great, I will start from that. But they encrypt the subject line, in addition to the body afaik. It is technically impossible to encrypt "every part of the email" because that would break delivery (e.g., metadata such as recipient or timestamps).
This also has the cost of a nonstandard protocol (not plain PGP), with all that implies in terms of compatibility, maintenance needs etc.
That's a fair point about the portability of their protocol. And yeah, you're right that they don't encrypt everything. I'd meant to say "they encrypt everything you can encrypt without making the email undeliverable" but my fingers decided to type something else.