---
name: "Mail::Box::IMAP4s"
section: "3pm"
platform: "linux"
package: "libmail-box-imap4-perl"
version: "3.009-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Mail::Box::IMAP4s"
---

# Mail::Box::IMAP4s(3pm)

handle IMAP4 folders as client, with ssl connection

## NAME

Mail::Box::IMAP4s - handle IMAP4 folders as client, with ssl connection

## INHERITANCE

```
 Mail::Box::IMAP4s
   is a Mail::Box::IMAP4
   is a Mail::Box::Net
   is a Mail::Box
   is a Mail::Reporter
```

## SYNOPSIS

```
 my $url = 'imap4s://user:passwd@host:port/INBOX';
 my $url = 'imaps://user:passwd@host:port/INBOX';
 use Mail::Box::IMAP4s;
 my $folder = Mail::Box::IMAP4s->new(folder => $url, ...);
 my $mgr    = Mail::Box::Manager->new;
 my $folder = $msg->open($url, retry => 3, interval => 5);
```

## DESCRIPTION

See Mail::Box::IMAP4.

Extends "DESCRIPTION" in Mail::Box::IMAP4.

## OVERLOADED

Extends "OVERLOADED" in Mail::Box::IMAP4.

- overload: **""**

  Inherited, see "OVERLOADED" in Mail::Box

- overload: **@{}**

  Inherited, see "OVERLOADED" in Mail::Box

- overload: **cmp**

  Inherited, see "OVERLOADED" in Mail::Box

## METHODS

Extends "METHODS" in Mail::Box::IMAP4.

### Constructors

Extends "Constructors" in Mail::Box::IMAP4.

- Mail::Box::IMAP4s-\>**new**(%options)

  ```
   -Option           --Defined in      --Default
    access             Mail::Box         'r'
    body_delayed_type  Mail::Box         Mail::Message::Body::Delayed
    body_type          Mail::Box         Mail::Message::Body::Lines
    cache_body         Mail::Box::IMAP4  NO
    cache_head         Mail::Box::IMAP4  NO or DELAY
    cache_labels       Mail::Box::IMAP4  NO or DELAY
    coerce_options     Mail::Box         []
    create             Mail::Box         <false>
    extract            Mail::Box         10240
    field_type         Mail::Box         undef
    fix_headers        Mail::Box         <false>
    folder             Mail::Box         /
    folderdir          Mail::Box         <network location>
    head_delayed_type  Mail::Box         Mail::Message::Head::Delayed
    head_type          Mail::Box         Mail::Box::IMAP4::Head or Mail::Message::Head::Complete
    join_connection    Mail::Box::IMAP4  true
    keep_dups          Mail::Box         <false>
    lock_file          Mail::Box         undef
    lock_timeout       Mail::Box         1 hour
    lock_type          Mail::Box         'NONE'
    lock_wait          Mail::Box         10 seconds
    locker             Mail::Box         undef
    log                Mail::Reporter    'WARNINGS'
    manager            Mail::Box         undef
    message_type       Mail::Box         Mail::Box::IMAP4::Message
    multipart_type     Mail::Box         Mail::Message::Body::Multipart
    password           Mail::Box::Net    undef
    remove_when_empty  Mail::Box         <false>
    save_on_exit       Mail::Box         <true>
    server_name        Mail::Box::Net    undef
    server_port        Mail::Box::Net    993
    ssl                                  { SSL_verify_mode => SSL_VERIFY_NONE }
    starttls                             false
    trace              Mail::Reporter    'WARNINGS'
    transporter        Mail::Box::IMAP4  Mail::Transport::IMAP4
    trusted            Mail::Box         <false>
    username           Mail::Box::Net    undef
  ```

  - access =\> MODE

    - body\_delayed\_type =\> CLASS

    - body\_type =\> CLASS\|CODE

    - cache\_body =\> 'NO'\|'YES'\|'DELAY'

    - cache\_head =\> 'NO'\|'PARTIAL'\|'DELAY'

    - cache\_labels =\> 'NO'\|'WRITE'\|'DELAY'

    - coerce\_options =\> ARRAY

    - create =\> BOOLEAN

    - extract =\> INTEGER \| CODE \| METHOD \| 'LAZY'\|'ALWAYS'

    - field\_type =\> CLASS

    - fix\_headers =\> BOOLEAN

    - folder =\> FOLDERNAME

    - folderdir =\> DIRECTORY

    - head\_delayed\_type =\> CLASS

    - head\_type =\> CLASS

    - join\_connection =\> BOOLEAN

    - keep\_dups =\> BOOLEAN

    - lock\_file =\> FILENAME

    - lock\_timeout =\> SECONDS

    - lock\_type =\> CLASS\|STRING\|ARRAY

    - lock\_wait =\> SECONDS

    - locker =\> OBJECT

    - log =\> LEVEL

    - manager =\> MANAGER

    - message\_type =\> CLASS

    - multipart\_type =\> CLASS

    - password =\> STRING

    - remove\_when\_empty =\> BOOLEAN

    - save\_on\_exit =\> BOOLEAN

    - server\_name =\> HOSTNAME

    - server\_port =\> INTEGER

    - ssl =\> HASH\|ARRAY

    Parameters to initialize the SSL connection.

  - starttls =\> BOOLEAN

    - trace =\> LEVEL

    - transporter =\> OBJECT\|CLASS

    - trusted =\> BOOLEAN

    - username =\> STRING

    ### The folder

Extends "The folder" in Mail::Box::IMAP4.

- $obj-\>**addMessage**($message, %options)

  Inherited, see "The folder" in Mail::Box

- $obj-\>**addMessages**(@messages)

  Inherited, see "The folder" in Mail::Box

- Mail::Box::IMAP4s-\>**appendMessages**(%options)

  Inherited, see "The folder" in Mail::Box

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

  Inherited, see "METHODS" in Mail::Box::IMAP4

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

  Inherited, see "The folder" in Mail::Box

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

  Inherited, see "The folder" in Mail::Box

- $obj-\>**folderdir**( \[$directory\] )

  Inherited, see "The folder" in Mail::Box

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

  Inherited, see "The folder" in Mail::Box

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

  Inherited, see "The folder" in Mail::Box

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

  Inherited, see "The folder" in Mail::Box

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

  Inherited, see "The folder" in Mail::Box

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

  Inherited, see "The folder" in Mail::Box

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

  Inherited, see "The folder" in Mail::Box

### Folder flags

Extends "Folder flags" in Mail::Box::IMAP4.

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

  Inherited, see "Folder flags" in Mail::Box

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

  Inherited, see "Folder flags" in Mail::Box

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

  Inherited, see "Folder flags" in Mail::Box

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

  Inherited, see "Folder flags" in Mail::Box

### The messages

Extends "The messages" in Mail::Box::IMAP4.

- $obj-\>**current**( \[$number\|$message\|$message\_id\] )

  Inherited, see "The messages" in Mail::Box

- $obj-\>**find**($message\_id)

  Inherited, see "The messages" in Mail::Box

- $obj-\>**findFirstLabeled**( $label, \[BOOLEAN, \[$msgs\]\] )

  Inherited, see "The messages" in Mail::Box

- $obj-\>**message**( $index, \[$message\] )

  Inherited, see "The messages" in Mail::Box

- $obj-\>**messageId**( $message\_id, \[$message\] )

  Inherited, see "The messages" in Mail::Box

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

  Inherited, see "The messages" in Mail::Box

- $obj-\>**messages**( \<'ALL'\|$range\|'ACTIVE'\|'DELETED'\|$label\| !$label\|$filter\> )

  Inherited, see "The messages" in Mail::Box

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

  Inherited, see "The messages" in Mail::Box

- $obj-\>**scanForMessages**($message, $message\_ids, $timespan, $window)

  Inherited, see "The messages" in Mail::Box

### Sub-folders

Extends "Sub-folders" in Mail::Box::IMAP4.

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

  - Mail::Box::IMAP4s-\>**listSubFolders**(%options)

  Inherited, see "Sub-folders" in Mail::Box

- $obj-\>**nameOfSubFolder**( $subname, \[$parentname\] )

  - Mail::Box::IMAP4s-\>**nameOfSubFolder**( $subname, \[$parentname\] )

  Inherited, see "Sub-folders" in Mail::Box

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

  Inherited, see "Sub-folders" in Mail::Box

- $obj-\>**openSubFolder**($subname, %options)

  Inherited, see "Sub-folders" in Mail::Box

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

  - Mail::Box::IMAP4s-\>**topFolderWithMessages**()

  Inherited, see "Sub-folders" in Mail::Box

### Internals

Extends "Internals" in Mail::Box::IMAP4.

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

  Inherited, see "Internals" in Mail::Box::IMAP4

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

  Inherited, see "Internals" in Mail::Box

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

  - Mail::Box::IMAP4s-\>**create**($folder, %options)

  Inherited, see "METHODS" in Mail::Box::Net

- $obj-\>**createTransporter**($class, %options)

  Inherited, see "Internals" in Mail::Box::IMAP4

- $obj-\>**determineBodyType**($message, $head)

  Inherited, see "Internals" in Mail::Box

- $obj-\>**fetch**( \<$messages\|$selection\>, $info )

  Inherited, see "Internals" in Mail::Box::IMAP4

- Mail::Box::IMAP4s-\>**foundIn**( \[$foldername\], %options )

  Inherited, see "Internals" in Mail::Box

- $obj-\>**getHead**($message)

  Inherited, see "Internals" in Mail::Box::IMAP4

- $obj-\>**getHeadAndBody**($message)

  Inherited, see "Internals" in Mail::Box::IMAP4

- $obj-\>**lineSeparator**( \[\<STRING\|'CR'\|'LF'\|'CRLF'\>\] )

  Inherited, see "Internals" in Mail::Box

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

  Inherited, see "Internals" in Mail::Box

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

  Inherited, see "Internals" in Mail::Box

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

  Inherited, see "Internals" in Mail::Box

- $obj-\>**storeMessage**($message)

  Inherited, see "Internals" in Mail::Box

- $obj-\>**toBeThreaded**($messages)

  Inherited, see "Internals" in Mail::Box

- $obj-\>**toBeUnthreaded**($messages)

  Inherited, see "Internals" in Mail::Box

- $obj-\>**transporter**( \[$object\] )

  Inherited, see "Internals" in Mail::Box::IMAP4

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

  Inherited, see "Internals" in Mail::Box

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

  Inherited, see "Internals" in Mail::Box::IMAP4

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

  Inherited, see "Internals" in Mail::Box::IMAP4

### Other methods

Extends "Other methods" in Mail::Box::IMAP4.

- $obj-\>**timespan2seconds**($time)

  - Mail::Box::IMAP4s-\>**timespan2seconds**($time)

  Inherited, see "Other methods" in Mail::Box

### Error handling

Extends "Error handling" in Mail::Box::IMAP4.

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

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

- $obj-\>**addReport**($object)

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

- $obj-\>**defaultTrace**( \[$level\]\|\[$loglevel, $tracelevel\]\|\[$level, $callback\] )

  - Mail::Box::IMAP4s-\>**defaultTrace**( \[$level\]\|\[$loglevel, $tracelevel\]\|\[$level, $callback\] )

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

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

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

- $obj-\>**log**( \[$level, \[$strings\]\] )

  - Mail::Box::IMAP4s-\>**log**( \[$level, \[$strings\]\] )

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

- $obj-\>**logPriority**($level)

  - Mail::Box::IMAP4s-\>**logPriority**($level)

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

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

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

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

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

- $obj-\>**report**( \[$level\] )

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

- $obj-\>**reportAll**( \[$level\] )

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

- $obj-\>**trace**( \[$level\] )

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

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

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

### Cleanup

Extends "Cleanup" in Mail::Box::IMAP4.

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

  Inherited, see "Cleanup" in Mail::Box

## DETAILS

Extends "DETAILS" in Mail::Box::IMAP4.

## DIAGNOSTICS

- Warning: Cannot find head back for $uidl in $folder.

  The header was read before, but now seems empty: the IMAP4 server does not produce the header lines anymore.

- Warning: Cannot read body for $uidl in $folder.

  The header of the message was retrieved from the IMAP4 server, but the body is not read, for an unknown reason.

- Error: Copying failed for one message.

  For some reason, for instance disc full, removed by external process, or read-protection, it is impossible to copy one of the messages.  Copying will proceed for the other messages.

- Error: Couldn't select IMAP4 folder $name

  - Error: Destination folder $name is not writable.

  The folder where the messages are copied to is not opened with write access (see new(access)).  This has no relation with write permission to the folder which is controlled by your operating system.

- Warning: Different messages with id $msgid

  The message id is discovered more than once within the same folder, but the content of the message seems to be different.  This should not be possible: each message must be unique.

- Error: Folder $name not deleted: not writable.

  The folder must be opened with write access via new(access), otherwise removing it will be refused.  So, you may have write-access according to the operating system, but that will not automatically mean that this `"delete"` method permits you to.  The reverse remark is valid as well.

- Notice: Impossible to keep deleted messages in IMAP

  Some folder type have a 'deleted' flag which can be stored in the folder to be performed later.  The folder keeps that knowledge even when the folder is rewritten.  Well, IMAP4 cannot play that trick.

- Error: Invalid timespan '$timespan' specified.

  The string does not follow the strict rules of the time span syntax which is permitted as parameter.

- Warning: Message $uidl disappeared from $folder.

  Trying to get the specific message from the server, but it appears to be gone.

- Warning: Message $uidl disappeared from $folder.

  Trying to get the specific message from the server, but it appears to be gone.

- Warning: Message-id '$msgid' does not contain a domain.

  According to the RFCs, message-ids need to contain a unique random part, then an `"@"`, and then a domain name.  This is made to avoid the creation of two messages with the same id.  The warning emerges when the `"@"` is missing from the string.

- Error: No IMAP4 transporter configured

  - Error: Package $package does not implement $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.

- Error: Unable to create subfolder $name of $folder.

  The copy includes the subfolders, but for some reason it was not possible to copy one of these.  Copying will proceed for all other sub-folders.

## SEE ALSO

This module is part of Mail-Box-IMAP4 distribution version 3.009, built on April 18, 2025. Website: *http://perl.overmeer.net/CPAN/*

## LICENSE

Copyrights 2001-2025 by \[Mark Overmeer\]. For other contributors see ChangeLog.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See *http://dev.perl.org/licenses/*
