Crossword Clue:

Took to the post office

AnswerCrossword Clue
MAILEDTook to the post office
STAMPINGGROUNDSPost office, to the postmaster
EMAILAlternative to the post office
SENDEROne going to the post office
EMAILLetters that don't go to the post office
GREENESTAMPPost office tribute to Graham?