Using other Mailbox Files with KMail
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Chapter 7. Using other Mailbox Files with KMail

Daniel Naber

David Rugge

Revision 1.5 (2002-10-03)

KMail offers an import tool for the messages and address books of some other email clients. You can access it using Tools->Import.... Please make sure that you compact your folders in the other email client, no matter if you are going to use the import utility or if you are going to copy files manually. You only need to read this chapter if this tool does not work for you.

This section is for all of the users who need to move email messages from their previous email client over to KMail. KMail can store its messages using “mbox” or “maildir” formats, which are the most widely-used mailbox formats on Unix-like systems. Mbox mailboxes store messages in one file, identifying where messages start and end with a From line (do not mix this up with the From: header that contains the message's sender); Maildir uses one file per message. For many Unix-like email clients, all you must do is move your mailboxes to ~/Mail (or make Mail a symbolic link to the folder containing your mailboxes), make sure they are writable by your user, and launch KMail. The mailboxes should now show up correctly in KMail.

Please have a look at the Tools section of KMail's homepage first, to see if there is a tool that imports your mailbox and maybe even address book.

Warning

Do not use a second email client that accesses the files in ~/Mail while KMail is running or you might lose messages. This section only explains how to import mailboxes to KMail once; it is not useful to you if you're planning to use several email clients for your mailboxes in the future.

Eudora Lite/Eudora Pro

Eudora uses the mbox format in its mail files. To use them with KMail, make sure that your Eudora mailboxes have been compacted, then copy the .mbx files (Windows® Eudora) or Eudora mailbox files (Mac® Eudora) to your ~/Mail folder. You do not need to copy the index files. Once you start KMail, the mailboxes should appear in the Folders pane and the messages should be accessible in the Headers pane.

If messages do not appear in the Headers pane, your mailbox files may still contain Windows® or Mac® line-feed characters. Use your favorite text editor, the recode command or a scripting language to change the Windows® or Mac® line feeds to Unix-like line feeds.

Mailsmith

Mailsmith runs on Mac® and uses its own database format; however it is possible to export mail into mbox format using File->Export Mail on a selected mailbox or on selected messages. Once the messages have been exported, translate the Mac® line breaks to Unix-like line breaks using your favorite editor, or using the following command under Linux®:

cat mail-mac.txt | perl -e 'while (<STDIN>) { s/\r/\n/gi; print $_ ;}' > mail-unix.txt

KMail will only recognize mboxes placed directly in the ~/Mail/ folder. This means that a folder hierarchy cannot be preserved by simply moving files into the ~/Mail/ folder, but will need to be reconstructed within KMail manually.

MMDF

This format is close enough to the mailbox format that KMail should be able to use these mailboxes if you just copy them to your ~/Mail folder; however, MMDF mailboxes have not been tested with KMail, so your results may vary. If you can get this format to work with KMail, please let us know so we can include more specific directions in the next documentation release.

MH mailboxes

MH mailboxes are directories containing files that correspond to each message in that mailbox. A shell script to convert MH mailboxes to mbox mailboxes, mh2kmail, is included at least in the source releases of KMail, but maybe not in the packaged releases. Running this script on a MH folder will convert it to an mbox file. We strongly suggest that you back up your MH mail folders before you use this script.

Forte Agent

In Agent:

  1. Select the messages to export

  2. Select FILE->SAVE MESSAGES AS

  3. Mark the UNIX FORMAT and SAVE RAW boxes

  4. Give File a .txt extension and save.

In KDE:

  1. Move the previously-saved file to the correct ~/Mail folder

  2. Rename file without .txt extension

When you open KMail the new folder with appropriate messages will be there.

Netscape® Mail

If you are using Netscape® 4.x, the mail files should be found in ~/nsmail; if you are using Netscape® 6.x, they're buried in a folder deep in the ~/.mozilla subfolder, something like: /home/user_name/.mozilla/user_name/2ts1ixha.slt/Mail/Mail/server_name (the 2ts1ixha.slt string will probably vary, so check it on your own system.) The [...]/Mail/Mail folder contains one subfolder for each account from which you receive mail through Netscape (for example, [...]/Mail/Mail/math.university.edu); you will need to copy files from each of them if you want everything to be accessible under KMail.

If you have no subfolders, just copy all of the Netscape® files to ~/Mail, make sure that they are writable (only by your user, of course), and restart KMail: all of the messages will now appear in KMail folders. (Note that if you use a command like cp * ~/Mail, you should follow it with rm -f ~/Mail/*.msf; every Netscape® 6 folder has a corresponding .msf file, and if you do not get rid of them you will have a bunch of spurious empty folders.)

If you were using subfolders under Netscape® (for example, a main folder called Work with subfolders called Jim and Nancy), there are additional steps required. First, create the main folder (Work) in KMail and create a temporary child folder under it (by right-clicking on the folder name and selecting Create child folder); it does not matter what you call this folder -- dummy or the default unnamed, for example. Once a child folder has been requested, KMail creates a hidden folder in ~/Mail called (in this example) .Work.directory. You can then copy your Netscape® subfolder files (Jim and Nancy) into ~/Mail/.Work.directory, and restart KMail; the child folders will appear under the main folder Work. Of course, this procedure may be extended for sub-subfolders, to any depth. (You can remove the temporary child folders afterwards, unless it amuses you to have a Work subfolder called dummy.)

Pegasus Mail

Pegasus for win32 uses single files for Mail folders similar to KMail. Pegasus mail folder files have the extension .pmm but they are the same format as mbox except the messages do not start with the From header, but with a control character. To work around this, replace each instance of the control character with From aaa@aaa Mon Jan 01 00:00:00 1997. This From line should be the first line of every message, before the Received: and other headers. Make sure to use a text editor that lets you save the files in Unix-like format or create new folders in Pegasus that are in Unix-like format and copy your messages there.

Maildir / Outlook Express / xfmail

Tools to convert these formats are available at the Tools section of KMail's homepage.

Lotus Notes, BeOS Mail files, cc: Mail, etc....

First you should have a look at Tools section of KMail's homepage if there are tools to convert your messages.

Mail programs not listed here or on the homepage probably do not work with KMail as they use proprietary mail formats that KMail cannot understand. However, there is no harm in trying! If the mailbox file looks similar to the mbox format, try copying the mailbox file (remember, the index file is not needed) to your ~/Mail folder and see what happens if you start KMail. If you get mailboxes from your favorite email client to work in KMail, please tell us how you did it so that we can include directions in a future revision of this documentation.

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