Not that I believed it for a nano second, but I did find it funny

Spammers should invest in proof readers or at least engage the spell checker, and lay off the capslock.

FBI Headquarters
935 Pennsylvania Avenue, NW
Washington, D.C. 20535-0001

THE F.B.I ANTI DIPLOMATIC FRAUD UNIT ARE AWARE THAT YOU HAVE BEEN
DEFRAUDED BY FRAUDE STARS AND WILL BE READY TO RECORVER YOUR MONEY
ANYWHERE IN THE WORLD

Then, there was the rest of the message

JUST GIVE US THE DETAILS OF THE FRAUD STARS SUCH AS THEIR NAMES,COUNTRIES,
TELEPHONE NUMBER,EMAIL ADDRESS,AND DETAILS OF HOW MUCH YOU HAVE GIVEN THEM.
WE WILL USE OUR NETWORK WORLDWIDE TO GET TO THAT COUNTRY WITH THE PACT
REACHED WITH THE GORVERNMENT OF THAT COUNTRY AND GET TO THE FRAUDSTAR, FBI
WILL RECORVER YOUR MONEY AND TAKE TEN PERCENT [ 10% OF THE TOTAL AMOUNT
AND RETURN THE BALANCE TO YOU.JUST SUBMIT THEIR DETAILS AND YOUR CONTACT
INFORMATION,WE WILL GET BACK TO YOU AS SOON AS POSSIBLE .
REGARDS.
DANIEL MCMULLEN [ SPECIAL AGENT]
fexcomi@gmail.com

"Special" agent? Plastic helmet special, maybe.