These SEO newsletters are worth opening, from a weekly news roundup to research on the biggest sites online. There are only a few here on purpose.

Enterprise and Ecommerce SEO newsletters deal with sites that have a lot of pages and a lot of people.
Research on the rankings and revenue of the biggest sites online.
Kevin Indig's research-backed notes on SEO and AI search for senior marketers.
SEO News newsletters tell you what changed this week.
Marie Haynes on Google's algorithm and AI search.
Aleyda Solis's weekly roundup of SEO and AI search news, resources and jobs.