Bob,
Thanks, as I stated we would never send a formal invitation by email. However, we are going to send an event invitation by email for the first time. 97% of our volunteers have email addresses, so we are going to send the invite out and request an email RSVP. Of course we will mail to those who don't have email addresses.
Once the event has happened, I will post the response rate of email invite vs. postal mail last year.
Hope the Myrtle Beach conference is a blast, wish I could be there.
Frank