Crossword puzzle clue "place to write letters"

"To write is to write is to write . . ." writer

He sang (but did not write) "I Write the Songs"

It may be used to write down a write-off

Place to write letters

Write in letters of gold

Write the wrong letters for a word

"The ___ and Alize keep me pissy / Girls used to diss me / Now they write letters 'cause they miss me" (Notorious B.I.G. lyric name-checking his fancy champagne diet)

Pen ___ (friends who write letters to each other)