http://eweiibe6tdjsdprb4px6rqrzzcsi22m4koia44kc5pcjr7nec2rlxyad.onion/help/administration/libravatar.md
For example, you can use the retro set, in
which case the URL would look like: ssl_url: "https://seccdn.libravatar.org/avatar/%{hash}?s=%{size}&d=retro"
Usage examples for Microsoft Office 365
If your users are Office 365 users, the GetPersonaPhoto service can be used.
This service requires a login, so this use case is most useful in a
corporate installation where all users have access to Office 365.