I'm having a problem which seemed to develop in versions 3.6.11 and continued in 3.6.12.
When I enable "Custom User Email Notification" and then register, it will send an email with the correct from email address, name, and subject, the body of the email is blank. I have tried with both html set to on and off. I do have body text set in the register plus settings but no matter what I do, I can't get it to send the customized email.
I have user verification off.
For now, I have just turned off custom notification, but this is one of the big reasons I loved register plus redux and would like to get it working again.