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Transfer IMP mail folders to UNIX
This is probably less of a hint when OS X is set to English, but I found French language on-screen instructions somewhat confusing. Also, there's a caveat or two, so maybe comments will lead to a better procedure.

IMP is a PHP/MySQL Webmail solution and is quite common, at least on university systems. I recently found out you could use it to download mailbox files in standard Unix mbox format. OS X mistakes these files for actual mailboxes (giving them mailbox icons), but you can't directly put them in ~/Library/Mailboxes/. I was still able to transfer the folder using the import procedure, but all messages are marked as new. So this might be more of a proof-of-concept thing than the best way to transfer mail. In fact, it might be easier to access the folder through and move all messages to a convenient local mailbox ("On My Mac"). In any event, here's the procedure. In IMP 3.2.1, do:
  1. Click "Folders"
  2. Select folder to export
  3. In the "Choose Action" menu, choose "Download Folder(s)"
In, do:
  1. Select "Import Mailboxes" in the "File" menu
  2. Choose "Standard mbox files"
  3. Press the '»' button twice to get to standard file dialog
  4. Select the folder containing your downloaded *.mbox file and press "Choose"
  5. In the newly-created "Import" or "Import-<N>" folder, you find your imported mbox which you can rename, move, etc.
The most confusing things in French were the name of the import option ("BAL" instead of "mbox") and the message before the open file dialog.

Let's hope it helps someone.
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IMP link dead, but project not
Authored by: nvdingo on Oct 17, '03 12:52:40PM

if you want to really find out about IMP, do a search for it on

the webserver appears to have every reference to imp deleted.

just sent an email to the author of imp to see what's up.

the ftp link to the tarball on DOES work, everything else... dead.

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IMP link dead, but project not
Authored by: nvdingo on Oct 17, '03 09:01:00PM

got a reply, the upstream provider was having routing issues. all is well, and i got it running, and it is really one of the cooler free webmail systems i have tried (and i have tried a few)

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BAL = Boite Aux Lettres = "box of letters"
Authored by: pexner on Oct 18, '03 10:14:42AM


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BAL = Boite Aux Lettres = "box of letters"
Authored by: Enkerli on Oct 18, '03 10:10:46PM

Well, sure, but it doesn't specifically mean "mbox," which is a format, not a generic name...

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Pipermail Archives
Authored by: Enkerli on Dec 05, '03 05:57:29PM

BTW, this also works with other .mbox files such as archives for pipermail mailing-list. In such a case, importing mailboxes is quite useful.

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