Eric, I found this -
To block email addresses from Apple IOS 8 iPhone
To block email addresses from Apple IOS 8 iPhone, iPad, and iPod Touch, use the following procedure-
Tap "From", and choose "Create Contact", "New".
Jot down the name and email address, or remember the sender's info. If you forget, open the email, and tap "From".
Next open "Settings", and scroll down to "Face Time".
Tap "Face Time", and scroll to the bottom, and tap "Blocked".
Scroll to the bottom (if you have other blocked phone numbers or addresses), and tap "Add New", and "Contacts" opens.
Tap the Contact you want to block, and you're done.
Tap the back arrow twice, and you're back to the main "Settings" page.
It is long and cumbersome (surely Apple can do better!), however it does work.
Thanks for your help!