This character is a Other Symbol and is commonly used, that is, in no specific script. The character is also known as mailbox for sending mail.
The glyph is not a composition. Its East Asian Width is wide. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. U+1F4EE offers a line break opportunity at its position, except in some numeric contexts.
The CLDR project calls this character “postbox” for use in screen reading software. It assigns these additional labels, e.g. for search in emoji pickers: mail, mailbox.
This character is designated as an emoji. It will be rendered as colorful emoji on conforming platforms. To reduce it to a monochrome character, you can combine it with Variation Selector-15: 📮︎ See the Emojipedia for more details on this character’s emoji properties.
The Wikipedia has the following information about this codepoint:
A post box (British English; also written postbox; also known as pillar box), also known as a collection box, mailbox, letter box or drop box (American English), is a physical box into which members of the public can deposit outgoing mail intended for collection by the agents of a country's postal service. The term post box can also refer to a private letter box for incoming mail.
Representations
System
Representation (click value to copy)
Nº
128238
UTF-8
F0 9F 93 AE
UTF-16
D8 3D DC EE
UTF-32
00 01 F4 EE
URL-Quoted
%F0%9F%93%AE
HTML hex reference
📮
Wrong windows-1252 Mojibake
📮
alias
mailbox for sending mail
Encoding: GB18030 (hex bytes)
94 39 E1 32
RFC 5137
\u'1F4EE'
Bash and Zsh inside echo -e
\U0001F4EE
C and C++
\U0001F4EE
C#
\U0001F4EE
CSS
\01F4EE
Excel
=UNICHAR(128238)
Go
\U0001F4EE
JavaScript
\uD83D\uDCEE
Modern JavaScript since ES6
\u{1f4ee}
JSON
\uD83D\uDCEE
Java
\uD83D\uDCEE
Lua
\u{1F4EE}
Matlab
char(128238)
Perl
"\x{1F4EE}"
PHP
\u{1f4ee}
PostgreSQL
U&'\+01F4EE'
PowerShell
`u{1F4EE}
Python
\U0001F4EE
Ruby
\u{1f4ee}
Rust
\u{1f4ee}
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