Email that respects you.
Plain-language guides to private email — encrypted providers, email aliases, and what really matters when your inbox isn't a data product.
How to Set Up a Custom Domain With an Encrypted Mail Provider
A step-by-step walkthrough for connecting your own domain to Proton Mail or Tuta: verification, MX records, and the SPF, DKIM, and DMARC records that keep your mail out of spam.
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PGP and End-to-End Email Basics: How Encrypted Mail Actually Works
What PGP is, how public and private keys encrypt and sign mail, how Proton Mail automates it with Web Key Directory, and what end-to-end encryption does and doesn't protect.
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How to Set Up Email Aliases With SimpleLogin or addy.io
A practical setup guide for email aliases: creating addresses, sending replies through the alias, adding a custom domain, and a per-signup workflow that contains spam and breaches.
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How to Read Email Headers: A Field Guide to the Envelope
A practical walkthrough of email headers — Received, SPF, DKIM, DMARC, Message-ID — so you can trace a message's path, spot spoofing, and see what your mail reveals.
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Custom Domain or Provider Address? A Guide to Email Portability
If you're setting up a new email account, should you use [email protected] or [email protected]? Here's the honest tradeoff and how to choose.
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Do You Actually Need Encrypted Email? A Plain-Language Guide
Encrypted email isn't for everyone. Here's how to figure out whether switching is worth it — without paranoia or marketing fluff.
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Email Alias Services Compared: AnonAddy, SimpleLogin, Relay
Email alias services let you create unlimited throwaway addresses that forward to your real inbox. Here's how AnonAddy, SimpleLogin, and Firefox Relay stack up on privacy, features, and price.
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What Email Metadata Leaks (Even With End-to-End Encryption)
End-to-end encryption protects message bodies, not the envelope. Here's exactly what metadata leaks from encrypted email and what you can do about it.
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Migrating from Gmail to Encrypted Email Without Losing Your Mail
A practical migration plan for moving away from Gmail to Proton Mail or Tutanota: importing history, forwarding contacts, handling 2FA recovery, and what breaks.
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Proton Mail vs Tutanota in 2026: Which Encrypted Email Fits?
Proton Mail and Tutanota are the two serious end-to-end encrypted email providers. They make different tradeoffs on metadata, ecosystem, and pricing. Here's how to pick.
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Private Mail Guide is part of a 26-site editorial network covering adversarial ML, AI governance, defensive tooling, and ops engineering — all open access.