This page presents information about the use of SPF by the Alexa Top Sites. While Alexa curates a list of the one million most popular sites, we often examine smaller subsets to explore how the most popular sites compare to subsets including less popular sites.
This page is broken down into sections by the size of the subset of the Alexa top sites. Within that section, we present views of the data we collected about the sites use of SPF.
Top 100
The graph below shows the policies published by the domains in the Alexa Top 100 websites which are using SPF.
Top 1,000
The graph below shows the policies published by the domains in the Alexa Top 1,000 websites which are using SPF.
Top 10,000
The graph below shows the policies published by the domains in the Alexa Top 10,000 websites which are using SPF.
