The email said: "Technology updates, such as Google Chrome's plans to deprecate third-party cookies in 2024, are changing the ways you reach audiences and measure results. Build a strong foundation for measuring your ads with the Google tag. Delaying could impact the performance of your ads and features, such as remarketing and conversion measurement."

Now I see that they've changed their minds[1] and so I wonder if I need to do anything with my website.

1: https://www.spiceworks.com/tech/tech-general/news/google-makes-a-u-turn-wont-deprecate-third-party-cookies/