Hi Mike,
Since the issue is with all your emails and not specific to the Recent Vistitors, It is happening due to one of the two reasons.
1. Either you have a plugin that handles mail delivery(smtp plugin?)
2. Or you have some code that disables html email delivery fro BuddyPress.
My suggestion will be to create a staging and then checking this by disabling individual plugins.
Regards
Brajesh
You must be logged in to reply to this topic.