imap-attachment-extractor

IMAP attachment extractor, with optional Thunderbird detach mode.

Prequisites

• Python 3.x
• Use keyring to store password on the system (Optional)

Installation

Installation from release :

• Download and extract the latest release.
• Open a terminal to the extracted directory.

Installation from sources :

$ curl --location https://github.com/Danamir/imap-attachment-extractor/archive/master.zip --output imap-attachment-extractor-master.zip
$ unzip imap-attachment-extractor-master.zip
$ mv imap-attachment-extractor-master/ imap-attachment-extractor/
$ cd imap-attachment-extractor

Setup :

Configure Python virtual environment :

$ python -m venv .env
$ . .env/bin/activate  # on Linux 
-or-
$ .env/Script/activate.bat  # on Windows

Install :

$ python setup.py develop
$ imap_aex --help
-or-
$ python imap_aex.py --help

Use configuration file (optional but recommended) :

$ cp config.ini-dist config.ini  # on Windows use 'copy' instead of 'cp'

Running

You can use imap_aex either only with the CLI, or with the configuration file, or a combination of the two. When using both, the command line will override the options found in the configuration file.

The only mandatory arguments are HOST and USER (or [imap] section host and user in the configuration file).

First run with configuration file :
By default the configuration template is in dry-run mode. You can force the execution in CLI with the --run option, or comment the dry-run=yes configuration line.

Password handling

You can use keyring to store a password with the system secured library. Supported on Linux / Windows / MacOS :

$ keyring set imap_aex:<HOST> <USER>

Or you can prompt the user for password on run with the --password option.

Mozilla Thunderbird 'detach' mode

It is recommended to use the --thunderbird option if you use Mozilla Thunderbird. The extractor will then use the extended message headers X-Mozilla-External-Attachment-URL and X-Mozilla-Altered to link to the local extracted file inside the modified message. This simulates the use of Detach action on an attachment in Mozilla Thunderbird.

Running options

Please refer to the CLI documentation. The configuration entries have the same name as the CLI options, but are placed in specific section.

CLI only options (those options are not in the configuration file):

• --conf=<c> : Use a specific configuration file, otherwise use config.ini. Can be used to configure multiple hosts, each with its own configuration file.
• --help : Display the CLI help, then exit.
• --list : List the server folders and corresponding extraction paths, then exit.
• --run : Force running, even if dry-run found in configuration file.

CLI documentation

IMAP Attachment extractor.

Works on IMAP SSL server by replacing an email after extracting the attachments.
Use keyring tool to store password. Initialize with 'keyring set imap_aex:<host> <user>'.

Usage: imap_aex [--help] [--verbose] [--debug] [--extract-dir=<e>] [--extract-only] [--folder=<f>] [--date=<d>] [options] [HOST] [USER]

Arguments:
  HOST                      IMAP host name.
  USER                      IMAP user name.


Options:
     --all                  Fetch all mail from the folder. Not recommended, prefer '--date' use.
  -c --conf=<c>             Optional configuration file, containing any of the command line options values. [Default: config.ini]
  -d --date=<d>             Date defininition, formatted as [<>]date[to][date]. Date can be y, y-m, or y-m-d.
                              - 2012-12-21 : on this day
                              - 2012-12 : on this month
                              - 2012 : on this year
                              - >2012 : since this year
                              - <2012-12-21 : before this day
                              - 2012-04 to 2012-10 : between those months

     --dry-run              Dump running information and leave the server intact.
     --debug                Debug mode: append modified messages to the server, but don't delete the source message.
     --dir-reg=<r>          Replace Regular expression to be applied before creating directories.
                            Optional replacement separated by ">>", otherwise delete the match.
                            Multiple expressions separated by "::".
                              - ^INBOX\/?                   Remove "INBOX" and "INBOX/" from subdirectory.
                              - ^INBOX$>>Inbox::INBOX\/     Replace "INBOX" by "Inbox", and ignore it as subdirectory.
                              - ^\[Gmail\]\/?               Remove "[Gmail]" and "[Gmail]/" from subdirectory.
                              - ^Drafts$>>Brouillons        Replace by translation.

  -e --extract-dir=<d>      Extract attachment to this directory. [Default: ./]
     --extract-only         Don't detach attachments, extract only.
     --flagged=<f>          Flagged/starred mail behaviour: [Default: skip]
                              - detach:     detach as a normal mail.
                              - extract:    extract only, leave message intact.
                              - skip:       don't extract, leave message intact.
  -f --folder=<f>           Mail folder. [Default: INBOX]

     --help                 Display this help message then exit.
     --inline-images        Handle inline images as attachments.
     --list                 List the server folders then exit.
     --max-size=<m>         Extract attachments bigger than this size. [Default: 100K]
     --no-subdir            Don't create folder subdirectories inside extract dir.
     --password             Prompt for password instead of looking in the keyring.
  -p --port=<p>             IMAP host SSL port. [Default: 993]
     --run                  Force running, even if dry-run found in config file.
     --thunderbird          Implements thunderbird detach mode, pointing to the extracted file local URL.
  -v --verbose              Display more information.