Hey, welcome to Paul O'Brien - Insights | Email & Privacy Tool Reviews.

Independent, hands-on reviews of email providers, privacy tools and cloud infrastructure, by Paul O'Brien, CBCI. Honest trade-offs, no hype.

Paul O'Brien - Insights | Email & Privacy Tool Reviews

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Email Privacy

Proton Mail vs Fastmail 2026: Privacy or Productivity?

Proton is built so your mail is unreadable to the host, and Fastmail so email is fast and dependable. Here is how they compare on encryption, custom domains, price, support and jurisdiction, and who should pick which.

12 min read
Email Privacy

Fastmail Review 2026: Why I Loved It, and Why Google Won

Fastmail is the best pure email service I've used: fast, private and built on open standards. So why does my mail now run through Google Workspace? An honest long read on what I loved, what I miss, and why I still left.

11 min read
Email Authentication

SPF, DKIM & DMARC: How Email Authentication Works

Email was built on trust, so the From line can be faked. This guide explains how SPF, DKIM and DMARC work together, adds MX, MTA-STS and BIMI, and points to the detailed guide for each.

8 min read

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Latest posts

HEY vs Fastmail: Which Email Provider Is Right for You?

HEY wants to reinvent how you handle email, while Fastmail wants to fit however you already work. After six months inside HEY and years of writing about Fastmail, here's an honest, fact-checked comparison of pricing, features, privacy and the trade-offs that matter day to day.

HEY vs Fastmail: Which Email Provider Is Right for You?

Nostr Mail (Nmail) Review: Decentralised Email Tested

Nostr Mail (Nmail) is an open-source webmail client that carries email over the Nostr protocol, so your identity is a key pair rather than an account. It’s fast and genuinely encrypted between Nostr users, but it leaks some metadata and the bridge to ordinary email weakens the story.

Nostr Mail (Nmail) Review: Decentralised Email Tested