Definition of "mailbox"

(chiefly US) A box into which mail is placed.

1. A collection point for mail intended for onward delivery, a secure box or receptacle for this purpose.  quotations  examples

   Quotations

   • She waved back, placed a stack of envelopes in her mailbox, and lifted the red flag.

     2018, Tayari Jones, An American Marriage, Oneworld Publications, page 264

2. A delivery point for mail, a box, compartment or slot for this purpose.  examples

(computing) A folder or account for the storage of email; an electronic inbox or mailstore.  examples