pen pal

US /ˈpen pæl/
UK /ˈpen pæl/
"pen pal" picture
1.

correspondant, correspondante

a person with whom one exchanges letters, especially regularly, but who is not a close friend

:
I've had a pen pal in Japan for five years.
J'ai un correspondant au Japon depuis cinq ans.
She enjoys writing to her pen pal about her daily life.
Elle aime écrire à son correspondant sur sa vie quotidienne.