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  • It is not a WordPress thing.
    Each service has their own method of generating a preview. There are sort of some standards. Facebook uses Open Graph tags. Not sure what Yahoo Mail uses. If they don’t find what they are looking for, they typically use the first image found.
    Yoast SEO has options to supply the Open Graph tags, unique for each page or one default image.
    Some services (like Facebook) also save what they find and don’t query the page again. That means that you can fix the page, but it still shows the old image it found the first time. There is also caching involved.

    Thread Starter arsmusic

    (@arsmusic)

    Thank you. That was sort of driving me crazy. I actually just replaced the first image with my logo. Personally I would rather just have nothing but this is definitely much better this way.

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