$ whoami
I'm John Moody — a tech industry veteran with 30+ years of experience, currently building on-premises email delivery systems that handle billions of sends. Writing about engineering leadership, deliverability at scale, and the hard lessons in between.
DKIM2 is a ground-up replacement for DKIM, moving from single-signature verification to a chain-of-custody model. Here's what's changing, why, and what it means for your infrastructure.
DMARC aggregate reports are the closest thing email has to server logs for your sending reputation. Here's how to read them — and what they're actually telling you.
A clear, practical guide to the three technologies that prove your emails are legitimate — written for engineers who know distributed systems but not email infrastructure.
Engineering Manager, Email Platforms @ Klaviyo
Building the systems behind billions of email sends. I write about email infrastructure at scale, engineering leadership, and the messy reality of figuring it out as you go.
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