Browse all articles, tutorials, and guides about Email
Posts
In-App, Email and Push From One Event
An order ships. The user wants a badge in the app, a digest email later, no push at all, and their own webhook endpoint pinged. The design that handles that without duplicates: an outbox keyed by event, user and channel, preferences evaluated at send time, digest windows, and provider feedback wired back in. With a runnable model and a build-or-buy verdict.
Email APIs With Hosted MCP Servers: Who Actually Ships One
Every email provider now claims AI-agent support, but there is a real dividing line: a hosted MCP server your agent connects to with a URL, versus a package you have to run yourself. As of August 2026 the hosted club is small. Here is the roster, what each server exposes, and how to wire one into Claude in two minutes.
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.
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.
Send an Email by Hand: The Raw SMTP Conversation (and Why You Should Not Do It in Production)
You can open a socket to a mail server and type an email one command at a time. Doing it once teaches you what every email API hides. Here is the full SMTP conversation, byte by byte, and the exact reasons production sending needs more than a telnet session.