---
name: "Mail::Message::Head::ResentGroup"
section: "3pm"
platform: "linux"
package: "perl-mail-message"
version: "4.05-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/Mail::Message::Head::ResentGroup"
---

# Mail::Message::Head::ResentGroup(3pm)

header fields tracking message delivery

## NAME

Mail::Message::Head::ResentGroup - header fields tracking message delivery

## INHERITANCE

```
 Mail::Message::Head::ResentGroup
   is a Mail::Message::Head::FieldGroup
   is a Mail::Reporter
```

## SYNOPSIS

```
  use Mail::Message::Head::ResentGroup;
  my $rg = Mail::Message::Head::ResentGroup->new(head => $head,
               From => 'me@home.nl', To => 'You@tux.aq');
  $head->addResentGroup($rg);
  my $rg = $head->addResentGroup(From => 'me');
  my @from = $rg->From;
  my @rgs = $head->resentGroups;
  $rg[2]->delete if @rgs > 2;
```

## DESCRIPTION

A *resent group* is a set of header fields which describe one intermediate step in the message transport.  Resent groups **have NOTHING to do** with user activety; there is no relation to the `"user's"` sense of creating reply, forward, or bounce messages at all!

Extends "DESCRIPTION" in Mail::Message::Head::FieldGroup.

## METHODS

Extends "METHODS" in Mail::Message::Head::FieldGroup.

### Constructors

Extends "Constructors" in Mail::Message::Head::FieldGroup.

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

  Inherited, see "Constructors" in Mail::Message::Head::FieldGroup

- $obj-\>**from**( \[\<$head\|$message\>, %options\] )

  WARNING: this method has two very different purposes.  For backward compatibility reasons, without arguments **resentFrom()** is called to return the `"From"` field of this resent group.

  With any arguments, a list of `"Mail::Message::Head::ResentGroup"` objects is returned, taken from the specified `$message` or message `$head`. Improves base, see "Constructors" in Mail::Message::Head::FieldGroup

- $any-\>**implementedTypes**()

  Inherited, see "Constructors" in Mail::Message::Head::FieldGroup

- $class-\>**new**( \[@fields\], %options )

  Create an object which maintains one set of resent headers.  The `@fields` are Mail::Message::Field objects from the same header.

  All `%options` which start with capitals will be used to construct additional fields.  These option names are prepended with `"Resent-*"`, keeping the capitization of what is specified. Improves base, see "Constructors" in Mail::Message::Head::FieldGroup

  ```
   -Option      --Defined in                     --Default
    Bcc                                            undef
    Cc                                             undef
    Date                                           <now>
    Delivered-To                                   undef
    From                                           <required>
    Message-ID                                     <uniquely created>
    Received                                       <created>
    Return-Path                                    undef
    Sender                                         undef
    To                                             undef
    head                                           <created automatically>
    message_head                                   undef
    software      Mail::Message::Head::FieldGroup  undef
    type          Mail::Message::Head::FieldGroup  undef
    version       Mail::Message::Head::FieldGroup  undef
  ```

  - Bcc =\> $text\|$field\|\\@fields

    - Cc =\> $text\|$field\|\\@fields

    - Date =\> $date

    When this resent-group is dispatched by the resender of the message. Like the `"Date"` field, it is not the date and time that the message was actually transported.

  - Delivered-To =\> $text\|$field

    - From =\> $text\|$field\|\\@fields

    - Message-ID =\> $text\|$field

    The `"Resent-Message-ID"` which identifies this resent group.  The `$field` must contain a message id.

  - Received =\> $text

    The `"Received"` field is the starting line for a resent group of header lines. If it is not defined, one is created using **createReceived()**.

  - Return-Path =\> $text\|$field

    - Sender =\> $text\|$field

    Only permitted when more than one from address is specified.  In this case, it selects one of these addresses as the main originator of the message.

  - To =\> $text\|$field\|\\@fields

    - head =\> $head

    The `$head` object where the data is stored in. By default a Mail::Message::Head::Partial is created for you.

  - message\_head =\> $head

    The real `$head` of the message where this resent group is part of.  The `"head"` used in this class is only a container for a subset of fields.

  - software =\> STRING

    - type =\> STRING

    - version =\> STRING

    ### Attributes

Extends "Attributes" in Mail::Message::Head::FieldGroup.

### The header

Extends "The header" in Mail::Message::Head::FieldGroup.

- $obj-\>**add**( \<$field, $value\> \| $object )

  All fields appear only once, so `add()` behaves as **set()**. Improves base, see "The header" in Mail::Message::Head::FieldGroup

- $obj-\>**addFields**( \[$fieldnames\] )

  Not applicable to resent-groups: the same name can appear in more than one group.  Therefore, a FIELDNAME is sufficiently distinctive. Improves base, see "The header" in Mail::Message::Head::FieldGroup

- $obj-\>**attach**($head)

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

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

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

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

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

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

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

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

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

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

  Returns (optionally after setting) the real header where this resent group belongs to.  This may be `"undef"` at creation, and then later filled in when **Mail::Message::Head::Complete::addResentGroup()** is called.

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

  Returns the fields in the order as should appear in header according to rfc2822.  For the `"Resent-*"` fields of the group, the order is not that important, but the `"Return-Path"`, `"Delivered-To"`, and `"Received"` must come first.  Only fields mentioned in the RFC are returned.

- $obj-\>**set**( \<$field, $value\> \| $object )

  Set a `$field` to a (new) `$value`.  The `$field` names which do not start with 'Resent-\*' but need it will have that added.  It is also an option to specify a fully prepared message field `$object`.  In any case, a field `$object` is returned.

  » example:

  ```
    my $rg = Mail::Message::Head::ResentGroup->new;
    $rg->set(To => 'fish@tux.aq');
    $msg->addResentGroup($rg);
    $msg->send;
    $msg->bounce(To => 'fish@tux.aq')->send;   # the same
    my $rg = Mail::Message::Head::ResentGroup->new(To => 'fish@tux.aq');
  ```

### Access to the header

Extends "Access to the header" in Mail::Message::Head::FieldGroup.

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

  In scalar context, the `"Resent-Bcc"` field is returned.  In list context, the addresses as specified within the bcc field are returned as Mail::Address objects.  Bcc fields are not transmitted (hidden for external parties).

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

  In scalar context, the `"Resent-Cc"` field is returned.  In list context, the addresses as specified within the cc field are returned as Mail::Address objects.

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

  Returns the `"Resent-Date"` field, or `"undef"` if it was not defined.

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

  The timestamp as stored within the `"Resent-Date"` field converted to local system time.

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

  The field which describes the `"Delivered-To"` of this resent group.

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

  Returns a list of all addresses specified in the `"Resent-To"`, `"-Cc"`, and `"-Bcc"` fields of this resent group.

- $any-\>**isResentGroupFieldName**($name)

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

  Returns the message-ID used for this group of resent lines.

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

  The field which describes the `"Received"` data of this resent group.

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

  The timestamp as stored within the `"Received"` field converted to local system time.

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

  In scalar context, the `"Resent-From"` field is returned.  In list context, the addresses as specified within the from field are returned as Mail::Address objects.

  For reasons of backward compatibility and consistency, the **from()** method will return the same as this method.

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

  The field which describes the `"Return-Path"` of this resent group.

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

  In scalar context, the `"Resent-Sender"` field is returned.  In list context, the addresses as specified within the from field are returned as Mail::Address objects.

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

  Inherited, see "Access to the header" in Mail::Message::Head::FieldGroup

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

  In scalar context, the `"Resent-To"` field is returned.  In list context, the addresses as specified within the to field are returned as Mail::Address objects.

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

  Inherited, see "Access to the header" in Mail::Message::Head::FieldGroup

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

  Inherited, see "Access to the header" in Mail::Message::Head::FieldGroup

### Internals

Extends "Internals" in Mail::Message::Head::FieldGroup.

- $obj-\>**collectFields**( \[$name\] )

  Inherited, see "Internals" in Mail::Message::Head::FieldGroup

- $obj-\>**createReceived**( \[$domain\] )

  Create a received field for this resent group.  This is automatically called if none was specified during creation of this resent group object.

  The content of this field is described in RFC2821 section 4.4.  It could use some improvement.

- $obj-\>**detected**($type, $software, $version)

  Inherited, see "Internals" in Mail::Message::Head::FieldGroup

### Error handling

Extends "Error handling" in Mail::Message::Head::FieldGroup.

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

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

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

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

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

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

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

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

### Cleanup

Extends "Cleanup" in Mail::Message::Head::FieldGroup.

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

  Inherited, see "Cleanup" in Mail::Reporter

## DIAGNOSTICS

- 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()`

## SEE ALSO

This module is part of Mail-Message version 4.05, built on April 10, 2026. Website: *http://perl.overmeer.net/mailbox/*

## 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.