Search Engine Land has reported that Google has started sending the mobile-first indexing notifications to the webmasters.

Barry Schwartz has shared a snapshot of such notifications received by some users.

says, “The notification reads “mobile-first indexing enabled for” and specifies the domain name of the site it was enabled for. Ari Finkelstein shared a screen shot of the notification with us.

It reads:

This means that you may see more traffic in your logs from Googlebot Smartphone. You may also see that snippets in Google Search results are now generated from the mobile version of your content.

Background: Mobile-first indexing means that Googlebot will now use the mobile version of your site for indexing and ranking, to better help our (primarily mobile) users find what they’re looking for. Google’s crawling, indexing, and ranking systems have historically used the desktop version of your site’s content, which can cause issues for mobile searchers when the desktop version differs from the mobile version. Our analysis indicates that the mobile and desktop versions of your site are comparable”.

First batch of Google mobile-first indexing notifications goes out today

Search Engine Land