mailbox
n. countable A2 Elementary US //ˈmeɪɫˌbɑks// UK //mˈeɪlbɒks// mail·box
n. a box where your letters are delivered, or a digital folder where your emails arrive.
n. a physical container for incoming postal mail or a digital storage location for electronic messages.
I check my mailbox every morning for new letters.
The system administrator warned that my digital mailbox was nearly full and I needed to delete old attachments.
While physical mailboxes are becoming less central to daily communication, the digital equivalent remains the primary hub for professional correspondence and official notifications.
Usage
In computing contexts, often refers specifically to the storage allocated to a single user on a mail server.