Admin Ads for single WP install?

Hi there,

I’m looking for a plugin with similar functionality to the Admin Ads plugin, which only works for WP Multisite.

I have quite a few client sites, and I’d like to ‘broadcast’ HTML messages to their WP dashboards from my central site. My client sites are all standalone WP installs, so they should have something like a child plugin that displays messages (feed?) from a parent plugin. Or another solution that works, of course.

Do you know of such a plugin? If so, many thanks for pointing me in the right direction!

Kind regards,
Stefaan