---
name: "Mail::Box::Dir::Message"
section: "3pm"
platform: "linux"
package: "perl-mail-box"
version: "4.02-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/Mail::Box::Dir::Message"
---

# Mail::Box::Dir::Message(3pm)

one message in a directory organized folder

## NAME

Mail::Box::Dir::Message - one message in a directory organized folder

## INHERITANCE

```
 Mail::Box::Dir::Message
   is a Mail::Box::Message
   is a Mail::Message
   is a Mail::Reporter
 Mail::Box::Dir::Message is extended by
   Mail::Box::MH::Message
   Mail::Box::Maildir::Message
```

## SYNOPSIS

```
  my $folder = new Mail::Box::MH ...
  my $message = $folder->message(10);
```

## DESCRIPTION

A `"Mail::Box::Dir::Message"` is a base class for one message in a directory organized folder; each message is stored in a separate file. There are no objects of type `"Mail::Box::Dir::Message"`, only extensions are allowed to be created.

At the moment, three of these extended message types are implemented:

- •

  Mail::Box::MH::Message

  which represents one message in a Mail::Box::MH folder.  MH folders are very, very simple.... and hence not sophisticated nor fast.

- •

  Mail::Box::Maildir::Message

  which represents one message in a Mail::Box::Maildir folder.  Flags are kept in the message's filename.  It is stateless, so you will never loose a message.

- •

  Mail::Box::Netzwert::Message

  which represents one message in a Mail::Box::Netzwert folder.  As advantage, it stores pre-parsed information in the message file.  As disadvantage: the code is not GPLed (yet).

Extends "DESCRIPTION" in Mail::Box::Message.

## METHODS

Extends "METHODS" in Mail::Box::Message.

### Constructors

Extends "Constructors" in Mail::Box::Message.

- $obj-\>**clone**(%options)

  Inherited, see "Constructors" in Mail::Message

- $class-\>**new**(%options)

  Create a messages in a directory organized folder. Improves base, see "Constructors" in Mail::Reporter

  ```
   -Option    --Defined in        --Default
    body        Mail::Message       undef
    body_type   Mail::Box::Message  <from folder>
    deleted     Mail::Message       false
    field_type  Mail::Message       undef
    filename                        undef
    fix_header                      false
    folder      Mail::Box::Message  <required>
    head        Mail::Message       undef
    head_type   Mail::Message       Mail::Message::Head::Complete
    labels      Mail::Message       +{}
    messageId   Mail::Message       undef
    message_id  Mail::Message       undef
    modified    Mail::Message       false
    size        Mail::Box::Message  undef
    trusted     Mail::Message       false
  ```

  - body =\> $object

    - body\_type =\> CODE\|$class

    - deleted =\> BOOLEAN

    - field\_type =\> $class

    - filename =\> $file

    The `$file` where the message is stored in.

  - fix\_header =\> BOOLEAN

    See Mail::Box::new(fix\_headers).

  - folder =\> $folder

    - head =\> $object

    - head\_type =\> $class

    - labels =\> \\@pairs\|\\%settings

    - messageId =\> $id

    - message\_id =\> $id

    - modified =\> BOOLEAN

    - size =\> $bytes

    - trusted =\> BOOLEAN

    ### Attributes

Extends "Attributes" in Mail::Box::Message.

- $obj-\>**bodyType**()

  Inherited, see "Attributes" in Mail::Message

- $obj-\>**fieldType**()

  Inherited, see "Attributes" in Mail::Message

- $obj-\>**filename**( \[$filename\] )

  Returns the name of the file in which this message is actually stored.  This will return `"undef"` when the message is not stored in a file.

- $obj-\>**fixHeader**()

  Returns `"true"` when the folder is in fixing mode.

- $obj-\>**folder**( \[$folder\] )

  Inherited, see "Attributes" in Mail::Box::Message

- $obj-\>**headType**()

  Inherited, see "Attributes" in Mail::Message

- $obj-\>**messageId**()

  Inherited, see "Attributes" in Mail::Message

- $obj-\>**seqnr**( \[$integer\] )

  Inherited, see "Attributes" in Mail::Box::Message

### Constructing a message

Extends "Constructing a message" in Mail::Box::Message.

- $obj-\>**bounce**( \[\<$rg\_object\|%options\>\] )

  Inherited, see "Constructing a message" in Mail::Message::Construct::Bounce

- $class-\>**build**( \[$message\|$part\|$body\], @fields, %options )

  Inherited, see "Constructing a message" in Mail::Message::Construct::Build

- $class-\>**buildFromBody**($body, \[$head\], $headers)

  Inherited, see "Constructing a message" in Mail::Message::Construct::Build

- $obj-\>**forward**(%options)

  Inherited, see "Constructing a message" in Mail::Message::Construct::Forward

- $obj-\>**forwardAttach**(%options)

  Inherited, see "Constructing a message" in Mail::Message::Construct::Forward

- $obj-\>**forwardEncapsulate**(%options)

  Inherited, see "Constructing a message" in Mail::Message::Construct::Forward

- $obj-\>**forwardInline**(%options)

  Inherited, see "Constructing a message" in Mail::Message::Construct::Forward

- $obj-\>**forwardNo**(%options)

  Inherited, see "Constructing a message" in Mail::Message::Construct::Forward

- $obj-\>**forwardPostlude**()

  Inherited, see "Constructing a message" in Mail::Message::Construct::Forward

- $obj-\>**forwardPrelude**()

  Inherited, see "Constructing a message" in Mail::Message::Construct::Forward

- $obj-\>**forwardSubject**(STRING)

  Inherited, see "Constructing a message" in Mail::Message::Construct::Forward

- $class-\>**read**($fh\|$text\|\\$text\|\\@lines, %options)

  Inherited, see "Constructing a message" in Mail::Message::Construct::Read

- $obj-\>**rebuild**(%options)

  Inherited, see "Constructing a message" in Mail::Message::Construct::Rebuild

- $obj-\>**reply**(%options)

  Inherited, see "Constructing a message" in Mail::Message::Construct::Reply

- $obj-\>**replyPrelude**( \[STRING\|$field\|$address\|\\@addrs\|\\@fields\] )

  Inherited, see "Constructing a message" in Mail::Message::Construct::Reply

- $any-\>**replySubject**(STRING)

  Inherited, see "Constructing a message" in Mail::Message::Construct::Reply

### The message

Extends "The message" in Mail::Box::Message.

- $obj-\>**container**()

  Inherited, see "The message" in Mail::Message

- $obj-\>**copyTo**($folder, %options)

  Inherited, see "The message" in Mail::Box::Message

- $obj-\>**endsOnNewline**()

  Inherited, see "The message" in Mail::Message

- $obj-\>**isDummy**()

  Inherited, see "The message" in Mail::Message

- $obj-\>**isPart**()

  Inherited, see "The message" in Mail::Message

- $obj-\>**moveTo**($folder, %options)

  Inherited, see "The message" in Mail::Box::Message

- $obj-\>**partNumber**()

  Inherited, see "The message" in Mail::Message

- $obj-\>**print**( \[$fh\] )

  Inherited, see "The message" in Mail::Message

- $obj-\>**send**( \[$mailer\], %options )

  Inherited, see "The message" in Mail::Message

- $obj-\>**size**()

  Inherited, see "The message" in Mail::Message

- $obj-\>**toplevel**()

  Inherited, see "The message" in Mail::Message

- $obj-\>**write**( \[$fh\] )

  Inherited, see "The message" in Mail::Message

### The header

Extends "The header" in Mail::Box::Message.

- $obj-\>**bcc**()

  Inherited, see "The header" in Mail::Message

- $obj-\>**cc**()

  Inherited, see "The header" in Mail::Message

- $obj-\>**date**()

  Inherited, see "The header" in Mail::Message

- $obj-\>**destinations**()

  Inherited, see "The header" in Mail::Message

- $obj-\>**from**()

  Inherited, see "The header" in Mail::Message

- $obj-\>**get**($fieldname)

  Inherited, see "The header" in Mail::Message

- $obj-\>**guessTimestamp**()

  Inherited, see "The header" in Mail::Message

- $obj-\>**head**( \[$head\] )

  Inherited, see "The header" in Mail::Message

- $obj-\>**nrLines**()

  Inherited, see "The header" in Mail::Message

- $obj-\>**sender**()

  Inherited, see "The header" in Mail::Message

- $obj-\>**study**($fieldname)

  Inherited, see "The header" in Mail::Message

- $obj-\>**subject**()

  Inherited, see "The header" in Mail::Message

- $obj-\>**timestamp**()

  Inherited, see "The header" in Mail::Message

- $obj-\>**to**()

  Inherited, see "The header" in Mail::Message

### The body

Extends "The body" in Mail::Box::Message.

- $obj-\>**body**( \[$body\] )

  Inherited, see "The body" in Mail::Message

- $obj-\>**contentType**()

  Inherited, see "The body" in Mail::Message

- $obj-\>**decoded**(%options)

  Inherited, see "The body" in Mail::Message

- $obj-\>**encode**(%options)

  Inherited, see "The body" in Mail::Message

- $obj-\>**isMultipart**()

  Inherited, see "The body" in Mail::Message

- $obj-\>**isNested**()

  Inherited, see "The body" in Mail::Message

- $obj-\>**parts**( \[\<'ALL'\|'ACTIVE'\|'DELETED'\|'RECURSE'\|$filter\>\] )

  Inherited, see "The body" in Mail::Message

### Flags

Extends "Flags" in Mail::Box::Message.

- $obj-\>**delete**()

  Inherited, see "Flags" in Mail::Message

- $obj-\>**deleted**( \[BOOLEAN\] )

  Inherited, see "Flags" in Mail::Message

- $obj-\>**isDeleted**()

  Inherited, see "Flags" in Mail::Message

- $obj-\>**isModified**()

  Inherited, see "Flags" in Mail::Message

- $obj-\>**label**($label\|PAIRS)

  Inherited, see "Flags" in Mail::Message

- $obj-\>**labels**()

  Inherited, see "Flags" in Mail::Message

- $obj-\>**labelsToStatus**()

  Inherited, see "Flags" in Mail::Message

- $obj-\>**modified**( \[BOOLEAN\] )

  Inherited, see "Flags" in Mail::Message

- $obj-\>**statusToLabels**()

  Inherited, see "Flags" in Mail::Message

### The whole message as text

Extends "The whole message as text" in Mail::Box::Message.

- $obj-\>**file**()

  Inherited, see "The whole message as text" in Mail::Message::Construct::Text

- $obj-\>**lines**()

  Inherited, see "The whole message as text" in Mail::Message::Construct::Text

- $obj-\>**printStructure**( \[$fh\|undef\],\[$indent\] )

  Inherited, see "The whole message as text" in Mail::Message::Construct::Text

- $obj-\>**string**()

  Inherited, see "The whole message as text" in Mail::Message::Construct::Text

### Internals

Extends "Internals" in Mail::Box::Message.

- $obj-\>**clonedFrom**()

  Inherited, see "Internals" in Mail::Message

- $class-\>**coerce**($message, %options)

  Inherited, see "Internals" in Mail::Message

- $obj-\>**create**($filename)

  Create the message in the specified file.  If the message already has a filename and is not modified, then a move is tried.  Otherwise the message is printed to the file.  If the `$filename` already exists for this message, nothing is done.  In any case, the new `$filename` is set as well.

- $obj-\>**diskDelete**()

  Inherited, see "Internals" in Mail::Box::Message

- $obj-\>**isDelayed**()

  Inherited, see "Internals" in Mail::Message

- $obj-\>**isTrusted**()

  Inherited, see "Internals" in Mail::Message

- $obj-\>**loadBody**()

  This method is called by the autoloader when the body of the message is needed.

- $obj-\>**loadHead**()

  This method is called by the autoloader when the header of the message is needed.

- $obj-\>**parser**()

  Create and return a parser for this message (-file).

- $obj-\>**readBody**( $parser, $head, \[$bodytype\] )

  Inherited, see "Internals" in Mail::Box::Message

- $obj-\>**readFromParser**( $parser, \[$bodytype\] )

  Inherited, see "Internals" in Mail::Message

- $obj-\>**readHead**( $parser, \[$class\] )

  Inherited, see "Internals" in Mail::Message

- $obj-\>**recursiveRebuildPart**($part, %options)

  Inherited, see "Internals" in Mail::Message::Construct::Rebuild

- $obj-\>**storeBody**($body)

  Inherited, see "Internals" in Mail::Message

- $obj-\>**takeMessageId**( \[STRING\] )

  Inherited, see "Internals" in Mail::Message

### Error handling

Extends "Error handling" in Mail::Box::Message.

- $obj-\>**AUTOLOAD**()

  Inherited, see "METHODS" in Mail::Message::Construct

- $obj-\>**notImplemented**()

  Inherited, see "Error handling" in Mail::Reporter

- $any-\>**shortSize**( \[$value\] )

  Inherited, see "Error handling" in Mail::Message

- $obj-\>**shortString**()

  Inherited, see "Error handling" in Mail::Message

### Cleanup

Extends "Cleanup" in Mail::Box::Message.

- $obj-\>**DESTROY**()

  Inherited, see "Cleanup" in Mail::Reporter

- $obj-\>**destruct**()

  Inherited, see "Cleanup" in Mail::Box::Message

## DETAILS

Extends "DETAILS" in Mail::Box::Message.

## DIAGNOSTICS

- Error: Cannot include forward source as $kind.

  Unknown alternative for the forward(include).  Valid choices are `"NO"`, `"INLINE"`, `"ATTACH"`, and `"ENCAPSULATE"`. Cast by `forward()`

- Error: No default mailer found to send message.

  The message **send()** mechanism had not enough information to automatically find a mail transfer agent to sent this message.  Specify a mailer explicitly using the `"via"` options. Cast by `send()`

- Error: cannot coerce a $type object into a $me object.

  Cast by `coerce()`

- Error: cannot include reply source as $kind.

  Unknown alternative for the `"include"` option of **reply()**.  Valid choices are `"NO"`, `"INLINE"`, and `"ATTACH"`. Cast by `reply()`

- Error: cannot read message from a $source.

  Cast by `read()`

- Fault: cannot write message to $file: $!

  When a modified or new message is written to disk, it is first written to a temporary file in the folder directory.  For some reason, it is impossible to create this file. Cast by `create()`

- Error: class $package does not implement method $method.

  Fatal error: the specific `$package` (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 `notImplemented()`

- Error: coercion starts with some object, not '$type'.

  Cast by `coerce()`

- Fault: failed to rename file $from to $to: $!

  When a modified or new message is written to disk, it is first written to a temporary file in the folder directory.  Then, the new file is moved to replace the existing file.  Apparently, the latter fails. Cast by `create()`

- Error: method bounce requires To, Cc, or Bcc.

  The message **bounce()** method forwards a received message off to someone else without modification; you must specified it's new destination. If you have the urge not to specify any destination, you probably are looking for **reply()**. When you wish to modify the content, use **forward()**. Cast by `bounce()`

- Error: method forwardAttach requires a preamble.

  Cast by `forwardAttach()`

- Error: method forwardEncapsulate requires a preamble.

  Cast by `forwardEncapsulate()`

- Error: method forwardNo requires a To.

  Cast by `forwardNo()`

- Error: method forwardNo requires a body.

  Cast by `forwardNo()`

- Error: no rebuild rule $name defined.

  Cast by `rebuild()`

- Error: only **build()** Mail::Message's; they are not in a folder yet.

  You may wish to construct a message to be stored in a some kind of folder, but you need to do that in two steps.  First, create a normal Mail::Message, and then add it to the folder.  During this **Mail::Box::addMessage()** process, the message will get **coerce()**-d into the right message type, adding storage information and the like. Cast by `build()`

- Error: please install Email::Simple.

  Cast by `coerce()`

- Error: please install MIME::Entity.

  Cast by `coerce()`

- Error: please install Mail::Internet.

  Cast by `coerce()`

- Error: select parts via '$what'?

  Cast by `parts()`

- Warning: skipped unknown key '$key' in build.

  Cast by `build()`

- Error: unable to read delayed body for message $msgid.

  For some reason, the header of the message could be read, but the body cannot.  Probably the file has disappeared or the permissions were changed during the progress of the program. Cast by `loadBody()`

- Error: unable to read delayed head for message $msgid.

  Mail::Box tries to be *lazy* with respect to parsing messages.  When a directory organized folder is opened, only the filenames of messages are collected.  At first use, the messages are read from their file.  Apperently, a message is used for the first time here, but has disappeared or is unreadible for some other reason. Cast by `loadBody()`

## SEE ALSO

This module is part of Mail-Box version 4.02, built on April 10, 2026. Website: *http://perl.overmeer.net/CPAN/*

## LICENSE

For contributors see file ChangeLog.

This software is copyright (c) 2001-2026 by Mark Overmeer.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
