Emily Lane
February 19, 2025

AWS SES users can now benefit from IAM role authentication for their AWS SES integration with Courier.
This method reduces the risk of credential leakage and simplifies credential management by using temporary, automatically rotated credentials. If you already use IAM Roles in your AWS infrastructure, this update helps you align your email authentication with your existing security practices.
Learn more: See the AWS SES integration docs for setup steps

Redesigned Preferences Editor and hosted preference center
Build, preview, and launch a branded notification preference center with no frontend code.
By Emily Lane
July 18, 2026

Experiments: A/B Testing in Journeys
Run 2 to 10 message variants on a single send node in a journey, split live traffic by weight, compare per-variant results, and promote the one you want.
By Emily Lane
July 09, 2026

AI Localization
Localize Courier templates in seconds with AI Translation, now available in Design Studio for email, SMS, push, in-app, and chat.
By Emily Lane
June 29, 2026
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