Subject line tester
Type a subject line and watch spam-score, word-count and emoji-fit chips update in real time. Open the AI suggestions dialog for alternates — clicking one replaces the current subject.
Production answer
Subject line tester is a reusable Oak Flats Muffler Men UI primitive with documented states, accessibility expectations, theme behavior, and implementation evidence.
Primary CTAReview Subject line tester states
Generative search brief
Subject line tester: Type a subject line and watch spam-score, word-count and emoji-fit chips update in real time. Open the AI suggestions dialog for alternates — clicking one replaces the current subject.