dead mail

• Courrier qui ne peut être distribué au destinataire ni retourné à l'expéditeur, généralement en raison d'une adresse incorrecte, d'informations manquantes ou d'un destinataire introuvable.

Mail that cannot be delivered to the intended recipient or returned to the sender, typically due to an incorrect address, missing information, or the recipient being unknown.

1. Undeliverable mailB2formal

   Mail that cannot be delivered to the intended recipient or returned to the sender, often due to an incorrect address or other issues.

   courrier non distribuable

   • The post office processes dead mail at a special facility.
   • Letters with no return address often become dead mail.
   • He received a notice that his package was classified as dead mail.