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.\"
.IX Title "Mail::Message::Field::Structured 3"
.TH Mail::Message::Field::Structured 3 2026-04-11 "perl v5.42.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH NAME
Mail::Message::Field::Structured \- one line of a structured message header
.SH INHERITANCE
.IX Header "INHERITANCE"
.Vb 4
\& Mail::Message::Field::Structured
\&   is a Mail::Message::Field::Full
\&   is a Mail::Message::Field
\&   is a Mail::Reporter
\&
\& Mail::Message::Field::Structured is extended by
\&   Mail::Message::Field::Addresses
\&   Mail::Message::Field::AuthResults
\&   Mail::Message::Field::DKIM
\&   Mail::Message::Field::Date
\&   Mail::Message::Field::URIs
.Ve
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 2
\&  my $f = Mail::Message::Field::Full
\&             \->new(\*(AqContent\-Type\*(Aq => \*(Aqtext/html\*(Aq);
\&
\&  my @encode = (charset => \*(Aqjp\*(Aq, use_continuations => 1);
\&  $f\->attribute(\*(Aqfilename=passwd\*(Aq);
\&  $f\->attribute(filename => \*(Aqpasswd\*(Aq, @encode);
\&
\&  my $attr = Mail::Message::Field::Attribute\->new(...);
\&  $f\->attribute($attr);
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
Extends "DESCRIPTION" in Mail::Message::Field::Full.
.SH OVERLOADED
.IX Header "OVERLOADED"
Extends "OVERLOADED" in Mail::Message::Field::Full.
.IP "overload: \fB""""\fR stringification" 4
.IX Item "overload: """" stringification"
Inherited, see "OVERLOADED" in Mail::Message::Field::Full
.IP "overload: \fB\*(Aq""""\*(Aq\fR stringification" 4
.IX Item "overload: '""""' stringification"
Inherited, see "OVERLOADED" in Mail::Message::Field
.IP "overload: \fB\*(Aq0+\*(Aq\fR numification" 4
.IX Item "overload: '0+' numification"
Inherited, see "OVERLOADED" in Mail::Message::Field
.IP "overload: \fB\*(Aq<=\fR\*(Aq> numeric comparison" 4
.IX Item "overload: '<='> numeric comparison"
Inherited, see "OVERLOADED" in Mail::Message::Field
.IP "overload: \fBbool\fR boolean" 4
.IX Item "overload: bool boolean"
Inherited, see "OVERLOADED" in Mail::Message::Field
.IP "overload: \fBcmp\fR string comparison" 4
.IX Item "overload: cmp string comparison"
Inherited, see "OVERLOADED" in Mail::Message::Field
.SH METHODS
.IX Header "METHODS"
Extends "METHODS" in Mail::Message::Field::Full.
.SS Constructors
.IX Subsection "Constructors"
Extends "Constructors" in Mail::Message::Field::Full.
.ie n .IP $obj\->\fBclone\fR() 4
.el .IP \f(CW$obj\fR\->\fBclone\fR() 4
.IX Item "$obj->clone()"
Inherited, see "Constructors" in Mail::Message::Field
.ie n .IP "$class\->\fBfrom\fR($field, %options)" 4
.el .IP "\f(CW$class\fR\->\fBfrom\fR($field, \f(CW%options\fR)" 4
.IX Item "$class->from($field, %options)"
Inherited, see "Constructors" in Mail::Message::Field::Full
.ie n .IP "$class\->\fBnew\fR(($line | $name, $body, @attributes), %options)" 4
.el .IP "\f(CW$class\fR\->\fBnew\fR(($line | \f(CW$name\fR, \f(CW$body\fR, \f(CW@attributes\fR), \f(CW%options\fR)" 4
.IX Item "$class->new(($line | $name, $body, @attributes), %options)"
.RS 4
.PD 0
.IP \(bu 4
.PD
\&\fBnew\fR(\f(CW$line\fR)
.Sp
Pass a \f(CW$line\fR as it could be found in a file: a (possibly folded) line
which is terminated by a new\-line.
.IP \(bu 4
\&\fBnew\fR(\f(CW$name\fR, \f(CW$body\fR, \f(CW@attributes\fR, \f(CW%options\fR)
.Sp
A set of values which shape the line.
.RE
.RS 4
.Sp
The \f(CW$name\fR is a wellformed header name (you may use \fBwellformedName()\fR) to
be sure about the casing.  The \f(CW$body\fR is a string, one body object, or an
ARRAY of body objects.  In case of objects, they must fit to the
constructor of the field: the types which are accepted may differ.
The \f(CW@attributes\fR LIST contains Mail::Message::Field::Attribute
objects.  Finally, there are some \f(CW%options\fR.
Improves base, see "METHODS" in Mail::Message::Field::Full
.Sp
.Vb 7
\& \-Option    \-\-Defined in                \-\-Default
\&  attributes                              +[ ]
\&  charset     Mail::Message::Field::Full  undef
\&  datum                                   undef
\&  encoding    Mail::Message::Field::Full  \*(Aqq\*(Aq
\&  force       Mail::Message::Field::Full  false
\&  language    Mail::Message::Field::Full  undef
.Ve
.IP "attributes => \e@attributes|\e%attributes" 2
.IX Item "attributes => @attributes|%attributes"
There are various ways to specify these attributes: pass
an ARRAY which list of key\-value pairs representing \f(CW@attributes\fR,
or an HASH containing these pairs, or an ARRAY with
Mail::Message::Field::Attribute objects.
.ie n .IP "charset => $charset" 2
.el .IP "charset => \f(CW$charset\fR" 2
.IX Item "charset => $charset"
.PD 0
.ie n .IP "datum => $date" 2
.el .IP "datum => \f(CW$date\fR" 2
.IX Item "datum => $date"
.PD
The method name \fIbody\fR is very confusing, even in the RFC.  In MailBox,
for historical reasons, \fBbody()\fR returns the part of the field contents
before the first semi\-colon.  \fBfoldedBody()\fR and \fBunfoldedBody()\fR
address the whole field.
.Sp
There is no common name for the piece of data before the parameters
(attributes) in the field\-content mentioned in the RFCs, so let\*(Aqs call
it \f(CW\*(C`datum\*(C'\fR.
.IP "encoding => \*(Aqq\*(Aq|\*(AqQ\*(Aq|\*(Aqb\*(Aq|\*(AqB\*(Aq" 2
.IX Item "encoding => 'q'|'Q'|'b'|'B'"
.PD 0
.IP "force => BOOLEAN" 2
.IX Item "force => BOOLEAN"
.ie n .IP "language => $language" 2
.el .IP "language => \f(CW$language\fR" 2
.IX Item "language => $language"
.PD
.RE
.RS 4
.Sp
» example: of a structured field
.Sp
.Vb 3
\&  my @attrs   = (Mail::Message::Field::Attribute\->new(...), ...);
\&  my %options = (extra => \*(Aqthe color blue\*(Aq);
\&  my $t = Mail::Message::Field::Full\->new(To => \e@addrs, @attrs, %options);
.Ve
.RE
.SS Attributes
.IX Subsection "Attributes"
Extends "Attributes" in Mail::Message::Field::Full.
.ie n .IP $obj\->\fBName\fR() 4
.el .IP \f(CW$obj\fR\->\fBName\fR() 4
.IX Item "$obj->Name()"
Inherited, see "Attributes" in Mail::Message::Field
.ie n .IP $obj\->\fBbody\fR() 4
.el .IP \f(CW$obj\fR\->\fBbody\fR() 4
.IX Item "$obj->body()"
Inherited, see "Attributes" in Mail::Message::Field
.ie n .IP $obj\->\fBfolded\fR() 4
.el .IP \f(CW$obj\fR\->\fBfolded\fR() 4
.IX Item "$obj->folded()"
Inherited, see "Attributes" in Mail::Message::Field
.ie n .IP "$obj\->\fBfoldedBody\fR( [$body] )" 4
.el .IP "\f(CW$obj\fR\->\fBfoldedBody\fR( [$body] )" 4
.IX Item "$obj->foldedBody( [$body] )"
Inherited, see "Attributes" in Mail::Message::Field
.ie n .IP $obj\->\fBname\fR() 4
.el .IP \f(CW$obj\fR\->\fBname\fR() 4
.IX Item "$obj->name()"
Inherited, see "Attributes" in Mail::Message::Field
.ie n .IP "$obj\->\fBunfoldedBody\fR( [$body, [$wrap]] )" 4
.el .IP "\f(CW$obj\fR\->\fBunfoldedBody\fR( [$body, [$wrap]] )" 4
.IX Item "$obj->unfoldedBody( [$body, [$wrap]] )"
Inherited, see "Attributes" in Mail::Message::Field
.ie n .IP "$obj\->\fBwellformedName\fR( [STRING] )" 4
.el .IP "\f(CW$obj\fR\->\fBwellformedName\fR( [STRING] )" 4
.IX Item "$obj->wellformedName( [STRING] )"
Inherited, see "Attributes" in Mail::Message::Field
.SS "The field"
.IX Subsection "The field"
Extends "The field" in Mail::Message::Field::Full.
.ie n .IP "$any\->\fBisStructured\fR( [$name] )" 4
.el .IP "\f(CW$any\fR\->\fBisStructured\fR( [$name] )" 4
.IX Item "$any->isStructured( [$name] )"
Inherited, see "The field" in Mail::Message::Field
.ie n .IP $obj\->\fBlength\fR() 4
.el .IP \f(CW$obj\fR\->\fBlength\fR() 4
.IX Item "$obj->length()"
Inherited, see "The field" in Mail::Message::Field
.ie n .IP $obj\->\fBnrLines\fR() 4
.el .IP \f(CW$obj\fR\->\fBnrLines\fR() 4
.IX Item "$obj->nrLines()"
Inherited, see "The field" in Mail::Message::Field
.ie n .IP "$obj\->\fBprint\fR( [$fh] )" 4
.el .IP "\f(CW$obj\fR\->\fBprint\fR( [$fh] )" 4
.IX Item "$obj->print( [$fh] )"
Inherited, see "The field" in Mail::Message::Field
.ie n .IP $obj\->\fBsize\fR() 4
.el .IP \f(CW$obj\fR\->\fBsize\fR() 4
.IX Item "$obj->size()"
Inherited, see "The field" in Mail::Message::Field
.ie n .IP "$obj\->\fBstring\fR( [$wrap] )" 4
.el .IP "\f(CW$obj\fR\->\fBstring\fR( [$wrap] )" 4
.IX Item "$obj->string( [$wrap] )"
Inherited, see "The field" in Mail::Message::Field
.ie n .IP $obj\->\fBtoDisclose\fR() 4
.el .IP \f(CW$obj\fR\->\fBtoDisclose\fR() 4
.IX Item "$obj->toDisclose()"
Inherited, see "The field" in Mail::Message::Field
.SS "Access to the body"
.IX Subsection "Access to the body"
Extends "Access to the body" in Mail::Message::Field::Full.
.ie n .IP $obj\->\fBdecodedBody\fR(%options) 4
.el .IP \f(CW$obj\fR\->\fBdecodedBody\fR(%options) 4
.IX Item "$obj->decodedBody(%options)"
Inherited, see "Access to the body" in Mail::Message::Field::Full
.SS "Access to the content"
.IX Subsection "Access to the content"
Extends "Access to the content" in Mail::Message::Field::Full.
.ie n .IP $obj\->\fBaddresses\fR() 4
.el .IP \f(CW$obj\fR\->\fBaddresses\fR() 4
.IX Item "$obj->addresses()"
Inherited, see "Access to the content" in Mail::Message::Field
.ie n .IP $obj\->\fBattrPairs\fR() 4
.el .IP \f(CW$obj\fR\->\fBattrPairs\fR() 4
.IX Item "$obj->attrPairs()"
Returns a list with attribute name and value pairs.
.ie n .IP "$obj\->\fBattribute\fR( $object|<STRING, %options>|<$name,$value,%options> )" 4
.el .IP "\f(CW$obj\fR\->\fBattribute\fR( \f(CW$object\fR|<STRING, \f(CW%options\fR>|<$name,$value,%options> )" 4
.IX Item "$obj->attribute( $object|<STRING, %options>|<$name,$value,%options> )"
Add an attribute to the field.  The attributes are added left\-to\-right into
the string representation of the field, although the order of the attributes
is un\-important, according to the RFCs.
.Sp
You may pass a fully prepared Mail::Message::Field::Attribute \f(CW$object\fR,
if you like to do all preparations for correct representation of the
data yourself.  You may also pass one \f(CW\*(C`STRING\*(C'\fR, which is a fully prepared
attribute.  This \f(CW\*(C`STRING\*(C'\fR will not be changed, so be careful about quoting
and encodings.
.Sp
As third possibility, you can specify an attribute \f(CW$name\fR and its \f(CW$value\fR.
An attribute object will be created for you implicitly in both
cases where such object is not supplied, passing the \f(CW%options\fR.  See
\&\fBMail::Message::Field::Attribute::new()\fR about the available \f(CW%options\fR.
.Sp
The attribute object is returned, however, when continuations are used this
may be an object you already know about.  \f(CW\*(C`undef\*(C'\fR is returned when
construction fails (when the attribute is incorrect).
Improves base, see "Access to the content" in Mail::Message::Field
.Sp
» example:
.Sp
.Vb 2
\&  $f\->attribute(filename => \*(Aqpasswd\*(Aq);
\&  $f\->attribute(filename => \*(Aqpasswd\*(Aq, use_continuations => 0);
\&
\&  my $attr = Mail::Message::Field::Attribute\->new(...);
\&  $f\->attribute($attr);
.Ve
.ie n .IP $obj\->\fBattributes\fR() 4
.el .IP \f(CW$obj\fR\->\fBattributes\fR() 4
.IX Item "$obj->attributes()"
Returns a list with all attributes, which are all
Mail::Message::Field::Attribute objects.  The attributes are not
ordered in any way.  The list may be empty.  Double attributes or
continuations are folded into one.
Improves base, see "Access to the content" in Mail::Message::Field
.ie n .IP $obj\->\fBbeautify\fR() 4
.el .IP \f(CW$obj\fR\->\fBbeautify\fR() 4
.IX Item "$obj->beautify()"
Inherited, see "Access to the content" in Mail::Message::Field::Full
.ie n .IP "$obj\->\fBcomment\fR( [STRING] )" 4
.el .IP "\f(CW$obj\fR\->\fBcomment\fR( [STRING] )" 4
.IX Item "$obj->comment( [STRING] )"
Inherited, see "Access to the content" in Mail::Message::Field
.ie n .IP "$any\->\fBcreateComment\fR(STRING, %options)" 4
.el .IP "\f(CW$any\fR\->\fBcreateComment\fR(STRING, \f(CW%options\fR)" 4
.IX Item "$any->createComment(STRING, %options)"
Inherited, see "Access to the content" in Mail::Message::Field::Full
.ie n .IP "$any\->\fBcreatePhrase\fR(STRING, %options)" 4
.el .IP "\f(CW$any\fR\->\fBcreatePhrase\fR(STRING, \f(CW%options\fR)" 4
.IX Item "$any->createPhrase(STRING, %options)"
Inherited, see "Access to the content" in Mail::Message::Field::Full
.ie n .IP $any\->\fBdateToTimestamp\fR(STRING) 4
.el .IP \f(CW$any\fR\->\fBdateToTimestamp\fR(STRING) 4
.IX Item "$any->dateToTimestamp(STRING)"
Inherited, see "Access to the content" in Mail::Message::Field
.ie n .IP "$any\->\fBstripCFWS\fR( [STRING] )" 4
.el .IP "\f(CW$any\fR\->\fBstripCFWS\fR( [STRING] )" 4
.IX Item "$any->stripCFWS( [STRING] )"
Inherited, see "Access to the content" in Mail::Message::Field
.ie n .IP $obj\->\fBstudy\fR() 4
.el .IP \f(CW$obj\fR\->\fBstudy\fR() 4
.IX Item "$obj->study()"
Inherited, see "Access to the content" in Mail::Message::Field
.ie n .IP "$any\->\fBtoDate\fR( [$time] )" 4
.el .IP "\f(CW$any\fR\->\fBtoDate\fR( [$time] )" 4
.IX Item "$any->toDate( [$time] )"
Inherited, see "Access to the content" in Mail::Message::Field
.ie n .IP $obj\->\fBtoInt\fR() 4
.el .IP \f(CW$obj\fR\->\fBtoInt\fR() 4
.IX Item "$obj->toInt()"
Inherited, see "Access to the content" in Mail::Message::Field
.SS Internals
.IX Subsection "Internals"
Extends "Internals" in Mail::Message::Field::Full.
.ie n .IP "$any\->\fBdecode\fR(STRING, %options)" 4
.el .IP "\f(CW$any\fR\->\fBdecode\fR(STRING, \f(CW%options\fR)" 4
.IX Item "$any->decode(STRING, %options)"
Inherited, see "Internals" in Mail::Message::Field::Full
.ie n .IP "$obj\->\fBencode\fR(STRING, %options)" 4
.el .IP "\f(CW$obj\fR\->\fBencode\fR(STRING, \f(CW%options\fR)" 4
.IX Item "$obj->encode(STRING, %options)"
Inherited, see "Internals" in Mail::Message::Field::Full
.SS Parsing
.IX Subsection "Parsing"
Extends "Parsing" in Mail::Message::Field::Full.
.ie n .IP "$obj\->\fBconsume\fR( $line | <$name,<$body|$objects>> )" 4
.el .IP "\f(CW$obj\fR\->\fBconsume\fR( \f(CW$line\fR | <$name,<$body|$objects>> )" 4
.IX Item "$obj->consume( $line | <$name,<$body|$objects>> )"
Inherited, see "Parsing" in Mail::Message::Field
.ie n .IP $any\->\fBconsumeComment\fR(STRING) 4
.el .IP \f(CW$any\fR\->\fBconsumeComment\fR(STRING) 4
.IX Item "$any->consumeComment(STRING)"
Inherited, see "Parsing" in Mail::Message::Field::Full
.ie n .IP $obj\->\fBconsumeDotAtom\fR(STRING) 4
.el .IP \f(CW$obj\fR\->\fBconsumeDotAtom\fR(STRING) 4
.IX Item "$obj->consumeDotAtom(STRING)"
Inherited, see "Parsing" in Mail::Message::Field::Full
.ie n .IP $any\->\fBconsumePhrase\fR(STRING) 4
.el .IP \f(CW$any\fR\->\fBconsumePhrase\fR(STRING) 4
.IX Item "$any->consumePhrase(STRING)"
Inherited, see "Parsing" in Mail::Message::Field::Full
.ie n .IP "$obj\->\fBdatum\fR( [$value] )" 4
.el .IP "\f(CW$obj\fR\->\fBdatum\fR( [$value] )" 4
.IX Item "$obj->datum( [$value] )"
The part of the field before the semi\-colon (\f(CW\*(C`;\*(C'\fR).
.ie n .IP "$obj\->\fBdefaultWrapLength\fR( [$length] )" 4
.el .IP "\f(CW$obj\fR\->\fBdefaultWrapLength\fR( [$length] )" 4
.IX Item "$obj->defaultWrapLength( [$length] )"
Inherited, see "Parsing" in Mail::Message::Field
.ie n .IP "$any\->\fBfold\fR( $name, $body, [$maxchars] )" 4
.el .IP "\f(CW$any\fR\->\fBfold\fR( \f(CW$name\fR, \f(CW$body\fR, [$maxchars] )" 4
.IX Item "$any->fold( $name, $body, [$maxchars] )"
Inherited, see "Parsing" in Mail::Message::Field
.ie n .IP $obj\->\fBparse\fR(STRING) 4
.el .IP \f(CW$obj\fR\->\fBparse\fR(STRING) 4
.IX Item "$obj->parse(STRING)"
Inherited, see "Parsing" in Mail::Message::Field::Full
.ie n .IP $obj\->\fBproduceBody\fR() 4
.el .IP \f(CW$obj\fR\->\fBproduceBody\fR() 4
.IX Item "$obj->produceBody()"
Inherited, see "Parsing" in Mail::Message::Field::Full
.ie n .IP "$obj\->\fBsetWrapLength\fR( [$length] )" 4
.el .IP "\f(CW$obj\fR\->\fBsetWrapLength\fR( [$length] )" 4
.IX Item "$obj->setWrapLength( [$length] )"
Inherited, see "Parsing" in Mail::Message::Field
.ie n .IP $obj\->\fBstringifyData\fR(STRING|ARRAY|$objects) 4
.el .IP \f(CW$obj\fR\->\fBstringifyData\fR(STRING|ARRAY|$objects) 4
.IX Item "$obj->stringifyData(STRING|ARRAY|$objects)"
Inherited, see "Parsing" in Mail::Message::Field
.ie n .IP $obj\->\fBunfold\fR(STRING) 4
.el .IP \f(CW$obj\fR\->\fBunfold\fR(STRING) 4
.IX Item "$obj->unfold(STRING)"
Inherited, see "Parsing" in Mail::Message::Field
.SS "Error handling"
.IX Subsection "Error handling"
Extends "Error handling" in Mail::Message::Field::Full.
.ie n .IP $obj\->\fBAUTOLOAD\fR() 4
.el .IP \f(CW$obj\fR\->\fBAUTOLOAD\fR() 4
.IX Item "$obj->AUTOLOAD()"
Inherited, see "Error handling" in Mail::Reporter
.ie n .IP $obj\->\fBnotImplemented\fR() 4
.el .IP \f(CW$obj\fR\->\fBnotImplemented\fR() 4
.IX Item "$obj->notImplemented()"
Inherited, see "Error handling" in Mail::Reporter
.SS Cleanup
.IX Subsection "Cleanup"
Extends "Cleanup" in Mail::Message::Field::Full.
.ie n .IP $obj\->\fBDESTROY\fR() 4
.el .IP \f(CW$obj\fR\->\fBDESTROY\fR() 4
.IX Item "$obj->DESTROY()"
Inherited, see "Cleanup" in Mail::Reporter
.SH DETAILS
.IX Header "DETAILS"
Extends "DETAILS" in Mail::Message::Field::Full.
.SH DIAGNOSTICS
.IX Header "DIAGNOSTICS"
.ie n .IP "Error: class $package does not implement method $method." 4
.el .IP "Error: class \f(CW$package\fR does not implement method \f(CW$method\fR." 4
.IX Item "Error: class $package does not implement method $method."
Fatal error: the specific \f(CW$package\fR (or one of its superclasses) does not
implement this method where it should. This message means that some other
related classes do implement this method however the class at hand does
not.  Probably you should investigate this and probably inform the author
of the package.
Cast by \f(CWnotImplemented()\fR
.ie n .IP "Warning: field content is not numerical: $content" 4
.el .IP "Warning: field content is not numerical: \f(CW$content\fR" 4
.IX Item "Warning: field content is not numerical: $content"
The numeric value of a field is requested (for instance the \f(CW\*(C`Lines\*(C'\fR or
\&\f(CW\*(C`Content\-Length\*(C'\fR fields should be numerical), however the data contains
weird characters.
Cast by \f(CWtoInt()\fR
.ie n .IP "Error: field name too long (max $count), in \*(Aq$name\*(Aq." 4
.el .IP "Error: field name too long (max \f(CW$count\fR), in \*(Aq$name\*(Aq." 4
.IX Item "Error: field name too long (max $count), in '$name'."
It is not specified in the RFCs how long a field name can be, but
at least it should be a few characters shorter than the line wrap.
Cast by \f(CWfold()\fR
.IP "Warning: illegal character in charset \*(Aq$name\*(Aq." 4
.IX Item "Warning: illegal character in charset '$name'."
The field is created with an utf8 string which only contains data from the
specified character set.  However, that character set can never be a valid
name because it contains characters which are not permitted.
Cast by \f(CWencode()\fR
.ie n .IP "Warning: illegal character in field name $name." 4
.el .IP "Warning: illegal character in field name \f(CW$name\fR." 4
.IX Item "Warning: illegal character in field name $name."
A new field is being created which does contain characters not permitted
by the RFCs.  Using this field in messages may break other e\-mail clients
or transfer agents, and therefore mutulate or extinguish your message.
Cast by \f(CWconsume()\fR
.IP "Warning: illegal character in language \*(Aq$name\*(Aq." 4
.IX Item "Warning: illegal character in language '$name'."
The field is created with data which is specified to be in a certain language,
however, the name of the language cannot be valid: it contains characters
which are not permitted by the RFCs.
Cast by \f(CWencode()\fR
.IP "Warning: illegal encoding \*(Aq$name\*(Aq, using \*(Aqq\*(Aq." 4
.IX Item "Warning: illegal encoding '$name', using 'q'."
The RFCs only permit base64 (\f(CW\*(C`b \*(C'\fR or \f(CW\*(C`B \*(C'\fR) or quoted\-printable
(\f(CW\*(C`q\*(C'\fR or \f(CW\*(C`Q\*(C'\fR) encoding.  Other than these four options are illegal.
Cast by \f(CWencode()\fR
.SH "SEE ALSO"
.IX Header "SEE ALSO"
This module is part of Mail\-Message version 4.05,
built on April 10, 2026. Website: \fIhttp://perl.overmeer.net/mailbox/\fR
.SH LICENSE
.IX Header "LICENSE"
For contributors see file ChangeLog.
.PP
This software is copyright (c) 2001\-2026 by Mark Overmeer.
.PP
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.