Email address key.
To have a key were we can store our email addresses so we do not have to type them over and over! A slider key like the question mark key that we have now.
Email addresses are one of the most used items we type every day.
Darral Maffet commented
This email plug in would need to be update capable and not assigned by the program. The pause for alternative characters or sliding is a fantastic idea that works well as far as I'm concerned!! Thanks!