Release Notes: April 27 - May 4, 2026

This week's update brings a massive under-the-hood upgrade to our public REST API, delivering enhanced security, rock-solid stability, and a smoother experience for all your favorite integrations. Alongside these foundational upgrades, we’ve added fantastic quality-of-life improvements to the email composer, making it easier than ever to migrate your existing templates and ensuring your images look flawless across every major inbox.

🔌 API & IntegrationsModernized REST API

We've completed a major upgrade to our public REST API, setting a powerful new foundation at api.campaignrefinery.com for all your integrations, enhanced Data Security, Consistent Error Handling Validation errors now share a unified shape, providing a predictable experience whether you're using Zapier, Kit, GoHighLevel, MailChimp, or custom integrations.

Action Required: API Updates As part of this modernization, you will need to update your existing API integrations to point to the new endpoints. Don't worry—a full, step-by-step migration guide will be sent directly to your email and will also appear inside the app to walk you through everything!

📧 Email & Deliverability Flexible

Unsubscribe Links Migrating from another platform? Our templates now accept multiple standard unsubscribe placeholders, meaning you don't have to manually rewrite your existing emails.

Flawless Image Rendering Images inserted into the email composer are now automatically styled to look perfect across all major clients, including Outlook and mobile.