👋 Hello, I'm U-Zyn Chua

I'm a software engineer. I build, research and write about technology, artificial intelligence, and the open web. I also mentor startups and teach AI engineering.

Learn more about me or explore my thoughts through my articles.

Recent Posts

Introducing AIMX: a self-hosted, open-source email server designed for AI agents

aimx ai email open-source

AIMX pigeon mascot, a steampunk-style robotic pigeon carrying an envelope

TL;DR: I built a self-hosted open-source email server known as AIMX. It's how I imagine Postfix would look like if it is built for AI agents. Learn more at aimx.email, or view the quick 40sec-demo.

Running AI agents on their own dedicated servers has been picking up this year. A few months ago I wrote about OpenClaw, and since then Hermes Agent from Nous Research and NanoClaw have shown up. The agent-on-a-server pattern has become the talk of town. I am still not very big on these as daily drivers. I prefer my own setup around the Claude ecosystem, mostly Claude Code on servers and Claude Cowork on the desktop. But the pattern is interesting and worth taking seriously: you dedicate a whole machine to a long-lived agent, and let it do things for you while you sleep.

AIMX stands for AI Mail Exchange, named after the MX DNS records that email runs on. The thing that actually pushed me into building it started with something quite boring.

Read more...

TISC @ DEF CON Singapore 2026 finals

security ctf defcon tisc

ntfy: Push notifications without signups

tools devops

Who is OpenClaw for? 🦞

openclaw ai

Raspberry Pi prices have gone through the roof

linkblog raspberry-pi hardware memory prices singapore

Web browser discrimination

linkblog web browser open-web

Bambu RFID scanner on Flipper Zero

3d-printing bambu flipper-zero rfid nfc hardware opensource

Passkey Security CTF Challenge for TISC

passkey ctf security tisc webauthn zig

Inconsistent keyboard UX on macOS

macos ux keyboard-shortcuts accessibility windows ui-design

DEF CON 33

defcon security

Passkey has a theft detection feature, but Apple, Google and Microsoft broke it

passkey security signcount microsoft apple google

Passcay: Zig library for passkey auth

passkey passcay zig ziglang opensource security

OpenAI Codex

openai ai coding

Guest Lecture at NUS Business School: The Open Web

Fun project 16 years ago

A series of rabbit holes

zig vscode

The Roadmap Pitfall: Companies Should Not Sell Tomorrow's Features Today

roadmap startup product apple ai apple-intelligence

Introducing Tixie

tixie singapore rust aws lambda vibe-coding engineering

Digg is coming back

digg open web

Hidden messages from OpenAI GPT 4.5 announcement

ai anthropic claude

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