NINE CHECKS BEFORE SHIPPING A PRODUCT EMAIL: A WORKFLOW FOR DEVELOPERS AND DESIGNERS

Summary from the TLDR Design newsletter

A product email can look right in a design file yet fail its reader through a vanishing action, a surviving staging link, or a duplicate send. Using a workspace invitation as the example, nine checks cover the message's behavioral contract, client compatibility, accessibility, captured application output, link validation, and retry handling. Delivery evidence, such as authentication and bounce handling, is reviewed separately after the template passes.