The Courier Blog

AI Translation: localize any template in seconds

Courier AI Translation brings built-in localization to Design Studio. Add a language to any template and AI translates every string in seconds. Works across email, SMS, push, in-app, and chat. Review side by side, override anything, and publish from the same editor you already use.

Is texting patients a HIPAA violation?

The short answer: texting patients is fine until an unsecured text carries protected health information. This post draws the line with side-by-side SMS examples, covers the minimum-necessary rule and when a BAA is required, and shows the template pattern that makes it structurally impossible to leak PHI into a text.

Inbox SDKs for Vue and Angular: a native in-app notification center

Courier now ships first-class inbox SDKs for Angular and Vue. Drop in a real-time notification center, toasts, and a preferences center with native components, an injectable service, and a composable, all backed by the same in-app inbox that already powers React and JavaScript apps.

watchOS 27 Notifications: What Changed and How to Adapt Your Product Sends

Apple's watchOS 27, announced at WWDC 2026, presents Apple Watch notifications based on relevance instead of arrival time and expands contextual Smart Stack widgets. Because watch notifications mirror iPhone push, your push strategy is your watch strategy. This guide covers what product and B2B notification teams should change: setting APNs interruption levels honestly, writing glanceable payloads, routing by urgency across push, email, SMS, and in-app inbox, using widgets for status content, and handling the split audience after watchOS 27 drops Series 8, Ultra 1, and SE 2.

Your Entire Lifecycle Marketing Department, Run from Claude Fable 5

With the rollout of Claude' Fable model, one thing is becoming increasingly clear. Marketing execution (especially the long-tail work), will be done in an AI editor. In Courier, connect your agent to the MCP server or CLI, install Courier Skills, and keep a small folder of markdown context files. From there, one person with a coding agent covers the work that used to require a lifecycle marketer, an email designer, a marketing ops hire, and an engineer: building journeys, shipping templates, auditing every notification, and debugging delivery without opening a dashboard.

Embed a notification preferences center with one web component

Courier's new @trycourier/courier-ui-preferences package ships a <courier-preferences> Web Component that drops a complete notification preferences center into any web app, framework or not. Users opt in and out of topics, choose which channels deliver each one (email, push, SMS, and more), and set per-topic digest schedules. It supports light and dark theming, custom channel labels, and reuses your existing Courier Inbox auth. React developers get the same UI bundled in @trycourier/courier-react v9.2.0 as the CourierPreferences component, no extra install needed.

Human-in-the-loop for AI payment agents: building approval notifications that work

AI agents need human approval before taking consequential actions: financial commitments, irreversible changes, decisions that affect other people. This post covers how to design those checkpoints and build the notification infrastructure: multi-channel delivery, live context, escalation, and a back-and-forth question loop between reviewers and the agent.

Notification Infrastructure vs Marketing Platform: When You Need Each

Two different layers of the messaging stack, two different buyers, and why most companies eventually run both — plus a rubric to keep transactional and campaign traffic in the right places.

What we shipped this month: May 2026 Edition

Courier shipped five launches in May 2026: AI Agent in Journeys (GA), the new Journeys API for code-driven flows, Custom Environments, Design Studio styling controls, and Courier Console v3. Each one closes a gap between writing software and shipping the messages that go with it.