’s mission is to reduce fraudulent email by promoting the adoption of email authentication. That goal is supported by sharing information about how people are using email authentication on the Internet. And as a non-profit actor with no commercial interests, some data is made available to us that might otherwise be kept private.

This section of the website offers the results of this analysis of public and private data sources. Unless otherwise noted, the material here is made available under the Creative Commons Attribution-ShareAlike 4.0 International License (CC-BY-SA).

There are several datasets being used, each of which may have subsections focused on individual protocols or usage patterns:

We look forward to publishing results from examining additional data sources over time.