English Reference

Word

mailbox

Phoneticsmail·box, stress on the first syllable

US/ˈmeɪɫˌbɑks/

UK/mˈeɪlbɒks/

Countable noun

Definition

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.

Examples

“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.”

Examples

simple

“I check my mailbox every morning for new letters.”

contextual

“The system administrator warned that my digital mailbox was nearly full and I needed to delete old attachments.”

complex

“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.

Domain

Computing

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.A2 KeyIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.3.0–4.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 2.0–2.524–43TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.225–549
Frequency
Frequent
Level
A2 · Elementary
Updated

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English Reference