Mail Tester

Mail Tester describes itself simply: "Check your newsletter's spam score and quality.This tool's free, and pretty." Its AI visibility score is 6.8 out of 10: the engines can find it, but they do not have much to hold on to.

On the page it is passable on a partly stated business identity and basic crawler access. What holds it back is a heading structure that lays out what it offers, sitemaps and entity links AI can follow, structured data describing the business and credibility markers like credentials or reviews.

Off the page, other sites link to it, the domain reads as established, people discuss it in places AI engines read and it comes up on Reddit. There is some, but not much, sign that press coverage is thin. Beyond that, AI engines do not yet recognise it as a distinct business.

There is not much on the page to read either, about 85 words. The site links to no social profiles, so there is nothing tying the brand to a wider presence.