Answer: dearreader

AnswerCrossword Clue
DEARREADER

Author's address?

DEARREADER

Start of a message from the editor

DEARREADER

You, to some writers

DEARREADER
Column reply opener
DEARREADER
Lead-in to some written advice
DEARREADERStart of a columnist's reply
DEARREADERColumn greeting