Notifications and Alerts | Invalid Email or special characters accepted

Replication steps :
1) Open the Dashboard
2) Navigate to email template > Account settings
3) Enter invalid email or special characters in "Emails to Carbon Copy when any signature requests is sent (Note, this email will not be dispalyed on the create request page)" and
"Change reply-to address for invite emails (currently goes to the senders email) Carbon Copies" textarea.

Expected : System should show error message when incorrect email or special characters are inserted