Hello!
First of all, great plugin!
Down to business...
My company's IT department and I have been struggling trying to find out how to send emails using Event Organiser's booking feature where we can customize the "from" and "reply-to" fields. We discovered a hook we could use, but we still ran into issues which lead us to finding and using your plugin.
Our problem is that now when we try to send a test email via EO's booking feature, the person filling out the form on our site does not receive a confirmation email at all. Is it possible that your plugin is conflicting with EO?
Here's the link to the page with the booking form:
http://sageacq.com/temporary-events/event/dancing/
Thank you in advance!