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Mail box or mailbox?

mail box is a noun meaning “Alternative form of mailbox”; mailbox is a noun meaning “A collection point for mail intended for onward delivery, a secure box or…”. mail box is written as two words and mailbox as one word; they are used differently.

mail boxormailbox

What is the difference between mail box and mailbox?

mail boxmailbox
Part of speechnounnoun
Meaning

Alternative form of mailbox

USA collection point for mail intended for onward delivery, a secure box or receptacle for this purpose

USA delivery point for mail, a box, compartment or slot for this purpose

Examplenone recordednone recorded
Formsmail-boxesmailboxes
Pronunciationnot recorded/ˈmeɪl.bɑks/
In writingnot counted (the list counts single words)2.0 times per million words

Sources: mail box and mailbox in the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

Every current meaning of mail box and mailbox

mail box

  1. 1

    noun Alternative form of mailbox

  2. 2

    noun Alternative form of mailbox

mailbox

  1. 1

    noun USA collection point for mail intended for onward delivery, a secure box or receptacle for this purpose

  2. 2

    noun USA delivery point for mail, a box, compartment or slot for this purpose

  3. 3

    noun A folder or account for the storage of email; an electronic inbox or mailstore

Source: the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); obsolete, archaic, dialect and rare senses left out.

Which is more common, mail box or mailbox?

mail box is a phrase, which the list of single words does not count; mailbox 2.0 times per million words.

Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

The words