Harden your inbox end to end.
Guides, reviews, and setup tutorials for encrypted email. ProtonMail, Tuta, and everything that keeps your inbox private.
End to End Encrypted Email Explained: What Stays Private
privacy · Sep 13Secure Email Providers Without Phone Number: Best Picks
comparisons · Sep 6Secure Mail: What It Protects and How to Set It Up
privacy · Sep 1Thunderbird PGP Setup: Encrypt Email Without Add-Ons
guides · Aug 23Proton Mail vs Gmail Privacy: Encryption and Data Access
comparisons · Aug 9How to Encrypt Email in Outlook: S/MIME, Purview, and IRM
guides · Jun 13SPF, DKIM, and DMARC Setup for a Custom Domain
guides · May 23How to Set Up Proton Mail: 2FA, Bridge & Custom Domain
guides · May 8Tuta Setup Guide: Getting Started with Encrypted Email
guides · May 7Email Security Threat Model: Who Reads Your Email?
guides · May 2// start here
The guides worth reading first
The list above is ordered by date. These are ordered by usefulness, and they are where most people should begin regardless of when they were published.
- Secure mail: what it protects and how to set it up
Start here. What secure email actually defends against, a ten-minute hardening path, and where to go per provider.
- Email security threat model
Who can realistically read your mail, and which of those threats switching provider actually fixes.
- Proton Mail vs Gmail privacy
Encryption, data access, jurisdiction, and legal disclosure, matched to which threat model each one actually fits.
- Encrypted email provider matcher
Answer a few questions and get a shortlist. Hard requirements eliminate providers rather than down-rank them.
- ProtonMail setup guide
Account creation, the day-one privacy settings, custom domains, and a migration that does not lose mail.
- Tuta setup guide
The German provider that encrypts subject lines by default, from signup to the tradeoffs it makes in return.
- Encrypt email in Outlook
S/MIME, Purview Message Encryption, and IRM, step by step for classic and new Outlook.
- SPF, DKIM, and DMARC setup
The three DNS records that get your mail delivered and stop anyone spoofing your domain.
Independent, specialist, and free to read
Secure Mail Guide publishes focused, sourced guides on a single topic. No paywall, no account, no ad tracking.