Inbox Thinking

The Alterable blog on email deliverability, personalization, and design. For marketers who want to understand the inbox, not just use it.

Email DesignJan 30, 20236 min read

MJML in 2026: What It's Still Good For, and Where It Gets in the Way

MJML compiles simple markup into bulletproof email HTML. Ten years on, here's what it still does better than anything else, where it fights you, and how to put dynamic content inside it.

Email DesignDec 16, 20215 min read

Create a Personalized Image for Your Email Campaign

Create personalized images with Alterable: our technology allows you to increase engagement and retention.

Email DesignDec 9, 20214 min read

Email is Ubiquitous and Here to Stay

Alterable (adjective. capable of being altered) was born to put real-time content personalization inside emails