French phrase
Je n'ai pas reçu ~ par la poste.
Meaning
I haven't received ___ in the mail.
When to use it
States that an item sent by mail has not arrived. It is mildly casual and can imply a request for help.
Example dialogue
Je n'ai pas reçu mon colis par la poste.
I haven't received my package in the mail.
D'accord, je contacte le service client.
Okay, I'll contact customer service.