imapsync --help

usage: /usr/bin/imapsync [options]

Several options are mandatory. 

--host1       <string> : "from" imap server. Mandatory.
--port1       <int>    : port to connect on host1. Default is 143.
--user1       <string> : user to login on host1. Mandatory.
--authuser1   <string> : user to auth with on host1 (admin user).
--password1   <string> : password for the user1. Dangerous, use --passfile1
--passfile1   <string> : password file for the user1. Contains the password.
--host2       <string> : "destination" imap server. Mandatory.
--port2       <int>    : port to connect on host2. Default is 143.
--user2       <string> : user to login on host2. Mandatory.
--authuser2   <string> : user to auth with on host2 (admin user).
--password2   <string> : password for the user2. Dangerous, use --passfile2
--passfile2   <string> : password file for the user2. Contains the password.
--noauthmd5            : don't use MD5 authentification.
--authmech1   <string> : auth mechanism to use with host1:
                         PLAIN, LOGIN, CRAM-MD5 etc.
--authmech2   <string> : auth mechanism to use with host2. See --authmech1
--ssl1                 : use an SSL connection on host1.
--ssl2                 : use an SSL connection on host2.
--folder      <string> : sync this folder.
--folder      <string> : and this one, etc.
--folderrec   <string> : sync this folder recursively.
--folderrec   <string> : and this one, etc.
--include     <regex>  : sync folders matching this regular expression
--include     <regex>  : or this one, etc.
                         in case both --include --exclude options are
                         use, include is done before.
--exclude     <regex>  : skips folders matching this regular expression
                         Several folders to avoid:
                          --exclude 'fold1|fold2|f3' skips fold1, fold2 and f3.
--exclude     <regex>  : or this one, etc.
--prefix1     <string> : remove prefix to all destination folders 
                         (usually INBOX. for cyrus imap servers)
                         you can use --prefix1 if your source imap server 
                         does not have NAMESPACE capability.
--prefix2     <string> : add prefix to all destination folders 
                         (usually INBOX. for cyrus imap servers)
                         use --prefix2 if your target imap server does not
                         have NAMESPACE capability.
--regextrans2 <regex>  : Apply the whole regex to each destination folders.
--regextrans2 <regex>  : and this one. etc.
                         When you play with the --regextrans2 option, first
                         add also the safe options --dry --justfolders
                         Then, when happy, remove --dry, remove --justfolders
--regexmess   <regex>  : Apply the whole regex to each message before transfer.
                         Example : 's/\000/ /g' # to replace null by space.
--regexmess   <regex>  : and this one.
--regexmess   <regex>  : and this one, etc.
--regexflag   <regex>  : Apply the whole regex to each flags list.
                         Example : 's/"Junk"//g' # to remove "Junk" flag.
--regexflag   <regex>  : and this one, etc.
--sep1        <string> : separator in case namespace is not supported.
--sep2        <string> : idem.
--delete               : delete messages on source imap server after
                         a successful transfer. Useful in case you
                         want to migrate from one server to another one.
                         With imap, delete tags messages as deleted, they
                         are not really deleted. See expunge.
--delete2              : delete messages on the destination imap server that
                         are not on the source server.
--expunge              : expunge messages on source account.
                         expunge really deletes messages marked deleted.
                         expunge is made at the beginning on the 
                         source server only. newly transferred messages
                         are expunged if option --expunge is given.
                         no expunge is done on destination account but
                         it will change in future releases.
--expunge1             : expunge messages on source account.
--expunge2             : expunge messages on target account.
--syncinternaldates    : sets the internal dates on host2 same as host1
--buffersize  <int>    : sets the size of a block of I/O.
--maxsize     <int>    : skip messages larger than <int> bytes
--maxage      <int>    : skip messages older than <int> days.
                         final stats (skipped) don't count older messages
                         see also --minage
--minage      <int>    : skip messages newer than <int> days.
                         final stats (skipped) don't count newer messages
                         You can do (+ are the messages selected):
                         past|----maxage+++++++++++++++>now
                         past|+++++++++++++++minage---->now
                         past|----maxage+++++minage---->now (intersection)
                         past|++++minage-----maxage++++>now (union)
--skipheader  <regex>  : Don't take into account header keyword 
                         matching <string> ex: --skipheader 'X.*'
--useheader   <string> : Use this header to compare messages on both sides.
                         Ex: Message-ID or Subject or Date.
--useheader   <string>   and this one, etc.
--skipsize             : Don't take message size into account.
--dry                  : do nothing, just print what would be done.
--subscribed           : transfers subscribed folders.
--subscribe            : subscribe to the folders transferred on the 
                         "destination" server that are subscribed
                         on the "source" server.
--(no)foldersizes      : Calculate the size of each "From" folder in bytes
                         and message counts. Meant to be used with
                         --justfoldersizes. Turned on by default.
--justfoldersizes      : exit after printed the folder sizes.
--syncacls             : Synchronises acls (Access Control Lists).
--nosyncacls           : Does not synchronise acls. This is the default.
--debug                : debug mode.
--debugimap            : imap debug mode.
--version              : print software version.
--justconnect          : just connect to both servers and print useful
                         information. Need only --host1 and --host2 options.
--justfolders          : just do things about folders (ignore messages).
--fast                 : be faster (just does not sync flags).
--split1     <int>     : split the requests in several parts on source server.
                         <int > is the number of messages handled per request.
                         default is like --split1 1000
--split2     <int>     : same thing on the "destination" server.
--nofastio1            : don't use fastio with the "from" server.
--nofastio2            : don't use fastio with the "destination" server.
--timeout     <int>    : imap connect timeout.
--help                 : print this.

Example: to synchronise imap account "foo" on "imap.truc.org"
                     to imap account "bar" on "imap.trac.org"

/usr/bin/imapsync \
   --host1 imap.truc.org --user1 foo --passfile1 /etc/secret1 \
   --host2 imap.trac.org --user2 bar --passfile2 /etc/secret2


 Mail::IMAPClient version is 2.2.9
 $Id: imapsync,v 1.219 2007/04/04 09:32:20 gilles Exp $ 
      imapsync copyleft is the GNU General Public License.
      See http://www.gnu.org/copyleft/gpl.html

INBOX. in den Namen des Ziels verschieben

--regextrans2 's/^INBOX\.(.+)/$1/'

ein komplettes Konto in den Unterordner FOO kopieren

--regextrans2 's/^INBOX(.*)/INBOX.FOO$1/'

wenn auf dem Zielsystem keine ACLs unterstützt werden

--nosyncacls

wenn sich MIME separator IDs bei jedem Zugriff der Mail ändern um Duplikate zu vermeiden

--skipheader '^Content-Type'

wenn nur neuere Mails kopiert werden sollen

--maxage 3650