This character is a Other Symbol and is commonly used, that is, in no specific script. The character is also known as mail.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. U+1F583 offers a line break opportunity at its position, except in some numeric contexts.
The Wikipedia has the following information about this codepoint:
A stamped envelope or postal stationery envelope (PSE) is an envelope with a printed or embossed indicium indicating the prepayment of postage. It is a form of postal stationery.
Representations
System
Representation (click value to copy)
NΒΊ
128387
UTF-8
F0 9F 96 83
UTF-16
D8 3D DD 83
UTF-32
00 01 F5 83
URL-Quoted
%F0%9F%96%83
HTML hex reference
🖃
Wrong windows-1252 Mojibake
Γ°ΕΈβΖ
alias
mail
Encoding: GB18030 (hex bytes)
94 39 F0 31
RFC 5137
\u'1F583'
Bash and Zsh inside echo -e
\U0001F583
C and C++
\U0001F583
C#
\U0001F583
CSS
\01F583
Excel
=UNICHAR(128387)
Go
\U0001F583
JavaScript
\uD83D\uDD83
Modern JavaScript since ES6
\u{1f583}
JSON
\uD83D\uDD83
Java
\uD83D\uDD83
Lua
\u{1F583}
Matlab
char(128387)
Perl
"\x{1F583}"
PHP
\u{1f583}
PostgreSQL
U&'\+01F583'
PowerShell
`u{1F583}
Python
\U0001F583
Ruby
\u{1f583}
Rust
\u{1f583}
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