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✏️ Editing: FAQ.FirstClass.txt

#!/bin/cat
$Id: FAQ.FirstClass.txt,v 1.1 2021/01/26 14:03:58 gilles Exp gilles $

This document is also available online at
https://imapsync.lamiral.info/FAQ.d/
https://imapsync.lamiral.info/FAQ.d/FAQ.FirstClass.txt

=======================================================================
         Imapsync tips for the FirstClass IMAP server.
=======================================================================

======================================================================
Q. From FirstClass to XXX
   http://www.firstclass.com/

R. Migrating from FirstClass is not easy because FirstClass, strangely, 
   does not show all messages via IMAP. To make it show all messages,
   a trick, painful to follow by hand, is moving emails 
   out and back in, for each folder. May be it can be done by a script.

FirstClass releases prior to release 12 do not shows the "Sent" 
  folder in IMAP but FirstClass release 12 shows it.
  I advice you to upgrade to FirstClass release 12 before leaving it
  with imapsync or another imap tool.

Here is a command line used to migrate from FirtClass release 12:

imapsync ... \
    --tmpdir /var/tmp --usecache \
    --useheader Message-ID \
    --idatefromheader \
    --addheader \
    --regextrans2 "s,(/|^) +,\$1,g" --regextrans2 "s, +(/|$),\$1,g" \
    --regextrans2 "s/[\^]/_/g"       \
    --regextrans2 "s/['\"\\\\]/_/g"  \
    --regextrans2 "s,&AC8-,-,g" \
    --regextrans2 "s,&APg-,oe,g"

On Windows:
  imapsync.exe ... ^
    --automap ^
    --usecache ^
    --useheader Message-ID ^
    --idatefromheader ^
    --addheader ^
    --regextrans2 "s,(/|^) +,$1,g" ^
    --regextrans2 "s, +(/|$),$1,g" ^
    --regextrans2 "s/[\^]/_/g" ^
    --regextrans2 "s/['\\]/_/g" ^
    --regextrans2 "s,^&AC8-,-,g"  ^
    --regextrans2 "s,^&APg-,oe,g"

Special thanks to Kristian Wind and Joey Alexander for helping me
writing this FAQ item. 
See also this worth reading discussion in a Zimbra forum:
https://web.archive.org/web/20120627043731/http://www.zimbra.com/forums/migration/20349-help-needed-migrating-firstclass.html

Another advice with FirstClass as host1, do not use --delete1emptyfolders since
it will destroy all subfolders of any empty folder. This is a FirstClass bug:
when asked to list a non-empty folder it says it has no children while it does
have ones.
See the details and explanations at
https://github.com/imapsync/imapsync/issues/207

MR SKB