Deliverability
Browse all articles, tutorials, and guides about Deliverability
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DevOps
|13 min read
What Sending a Developer Newsletter Actually Takes
A newsletter looks like a for-loop over an address list. It is not. Here is the infrastructure behind the DevOps Daily newsletter: sending domain and DNS, bounce and complaint handling, one-click unsubscribe, idempotent scheduling, and the Message-ID that makes any of it debuggable.
Networking
|11 min read
DMARCbis Is Here: What Changed in the New DMARC and What to Do to Your Records
DMARC finally became a real internet standard in 2026. The pct tag is gone, there are two new tags, and the Public Suffix List is out. Here is what actually changed and the exact edits to make to your DNS.