this post was submitted on 31 Oct 2024
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Privacy

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I was interested in hosting my own mail server that provides a similar level of privacy for users as Protonmail, ie the server admin cannot read any emails, even those which are not E2EE with PGP. Is there a self-hostable solution to this?

I'm aware the server admin can't read emails that were sent encrypted using the user's PGP key, but most emails I get are automated emails from companies/services/etc without the option to upload a public key to send the user encrypted email. If you're with a service like Protonmail, the server admin still cannot read even these emails.

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[–] [email protected] 1 points 1 hour ago

As someone who used to maintain an email setup for a small company, I would stay far away from self-hosting Email.

[–] [email protected] 6 points 8 hours ago (1 children)

That can easily be achieved with dovecot and a sieve script.

[–] [email protected] 3 points 8 hours ago (2 children)

but then the admin can still read the mail while it arrives ;-)

[–] [email protected] 16 points 8 hours ago

That's true of protonmail too

[–] [email protected] 4 points 7 hours ago (1 children)

There's no such thing E2EE email. The protocol doesn't support it.

[–] [email protected] 4 points 6 hours ago (1 children)

That's not really true, S/MIME is a thing

[–] [email protected] 1 points 3 hours ago

And gpg, which op mentions. But the devil's in the details with encryption.