Paul O'Brien

Paul O'Brien

Paul O'Brien writes about software, digital resilience, and business continuity. Technical background, pragmatic perspective—exploring the operational trade-offs between convenience, privacy, and control.

62 posts

Email Is Still a Craft — Even When We Pretend

Email used to be the product. Now it’s bundled into productivity suites and buried under notifications. But for many of us, it remains a deliberate craft — slower, clearer and more intentional than the tools that replaced it.

Amazon WorkMail: Built for Resilience

Amazon WorkMail looks basic at first glance, but beneath its minimal interface sits serious AWS infrastructure built for operational resilience, strict governance, and disaster recovery.

The 6 "From" Addresses Inside Every Single Email

The address you see in an email isn’t always the one that actually sent it. Behind every message are multiple “from” identities — each with a different technical role. Understanding them explains spam checks, bounces, and why email authentication exists at all.