Guide

What Siri AI means for your email, SMS, and push

Siri AI shipped with iOS 27 and changes what happens to a message after it's delivered. It reads urgent notifications aloud, searches Apple Mail and Messages, can delete or unsubscribe from your email on request, and will soon answer "where's my order?" through apps. Here's what each change means for your email, SMS, and push, and what to do now.

A marketer's guide to iOS 27 and priority notifications

On iOS 27, Apple Intelligence ranks and silences push notifications, rewrites them into summaries, and reads urgent ones aloud. Mail sorts your email into categories, Messages screens texts from unknown numbers, and Gmail, Slack, and Teams add their own filters on top. Here's what each layer does, what you can control, and what to change this quarter.

How to protect your email domain and sending reputation

AI agents have made spoofing cheap, and a DMARC record at p=none won't stop it. Here's how to enforce DMARC without bouncing your own mail, keep password resets apart from newsletters, protect your sending reputation, read Google Postmaster Tools, and audit your domain with six AI prompts.

How to get your logo in Gmail and Apple Mail

BIMI puts your logo next to your emails in Gmail and Apple Mail, but there is no upload form. It is earned by locking your domain down. Here is the whole project: what it costs, how long it takes, and the five ways it fails silently.

HIPAA-compliant notifications: where PHI should live

A practical guide to HIPAA-compliant notifications across SMS, push, email, and an in-app inbox. One rule, applied to every channel and every place PHI gets stored, including the systems most teams forget are in scope.

Email preview tools compared: 6 that render on real devices

Most "email preview" features are simulations. These six open your email in the actual client and send back a screenshot. Here’s what each costs per preview, how much work sits between your template and the result, and which ones you can drive from code.

Dark mode email design: a primer for every major email client

Dark mode is three different behaviors, not one. Apple Mail needs an explicit opt-in before it reads your dark CSS, Gmail ignores it entirely and rewrites your colors on its own, and classic Outlook gives you no control at all. This guide covers what each client actually does, the CSS that reaches the ones you can influence, and the design rules that survive the ones you cannot.

Product notifications API: what it handles and how to build

A product notifications API sits between your product's events and every channel you send on. You post an event, and the API decides what message goes out, to whom, on which channel, at what time, with that user's preferences applied. This post covers the ten things one has to handle, what building it yourself costs, and how to wire your event feed into Courier.

The federal texting rule your transportation and logistics software is breaking

A single text to a driving trucker can trigger a federal fine of up to $11,000 for the motor carrier, and your transportation and logistics software is often what sent it. How to design driver notifications that stay on the right side of FMCSA rules.