Can't manage registrants as the host

Hey all, 

I've scheduled a meeting as the account owner and host where registration is required. The meeting is 2 weeks out and I want to be able to email the registrants a special email each week leading up to the meeting. I am unable to 'manage registrants' in the registration tab. The only thing I can do is view the list of registrants.  Is there an issue? or is there no way for me to export emails of registrants from an upcoming meeting. Thanks for any help or insights