Capslockian
One who reinforces the severity of their written message - usually in the body of an email - through the use of capital lettering.
I just got an email from my boss: FINISH THAT REPORT BY FRIDAY! What a capslockian.
Morrie: DID YOU SEE THAT RADIOHEAD TICKETS GO ON SALE TOMORROW?
Phyllis: Ok, capslockian. Take some down time!
Morrie: DID YOU SEE THAT RADIOHEAD TICKETS GO ON SALE TOMORROW?
Phyllis: Ok, capslockian. Take some down time!