01329bdf82
it makes no sense to trash the placeholders, and in fact the common case is that they are deleted due to being replaced by the full message. a separate S_PURGED state needed to be added, as S_PURGE needs to be reset after setting F_DELETED (so the operation doesn't count as still pending after journal replay), yet trashing needs an indicator. logging is now done via a separate command, as piggy-backing it on flag updates just makes things less legible for no benefit. this is mostly academical, as trashing being done on the side where placeholders reside is rather unlikely.
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isync/mbsync - free (GPL) mailbox synchronization program
http://isync.sf.net/
See AUTHORS for contact information.
``mbsync'' is a command line application which synchronizes mailboxes;
currently Maildir and IMAP4 mailboxes are supported. New messages, message
deletions and flag changes can be propagated both ways.
``mbsync'' is suitable for use in IMAP-disconnected mode.
Synchronization is based on unique message identifiers (UIDs), so
no identification conflicts can occur (unlike with some other mail
synchronizers).
Synchronization state is kept in one local text file per mailbox pair;
these files are protected against concurrent ``mbsync'' processes.
Mailboxes can be safely modified while ``mbsync'' operates.
Multiple replicas of each mailbox can be maintained.
isync is the project name, while mbsync is the current executable name; this
change was necessary because of massive changes in the user interface.
* Features
* Fine-grained selection of synchronization operations to perform
* Synchronizes single mailboxes or entire mailbox collections
* Partial mirrors possible: keep only the latest messages locally
* Trash functionality: backup messages before removing them
* IMAP features:
* Supports TLS/SSL via imaps: (port 993) and STARTTLS
* Supports SASL for authentication
* Pipelining for maximum speed
* Compatibility
isync should work fairly well with any IMAP4 compliant server;
servers that support the UIDPLUS and LITERAL+ extensions are most
efficient.
Courier 1.4.3 is known to be buggy, version 1.7.3 works fine.
M$ Exchange (2013 at least) needs DisableExtension MOVE to be compatible
with the Trash functionality.
* Platforms
At some point, ``isync'' has successfully run on:
Linux, Solaris 2.7, OpenBSD 2.8, FreeBSD 4.3.
* Requirements
perl v5.14+
Berkeley DB 4.1+ (optional)
OpenSSL for TLS/SSL support (optional)
Cyrus SASL (optional)
zlib (optional)
The build from git also requires:
GNU autotools (autoconf & automake)
perl module Date::Parse (libtimedate-perl on Debian, perl-TimeDate on
Fedora and Suse)
* Installation
./autogen.sh (only when building from git)
./configure
make
sudo make install
* Help
Please see the man page for complete documentation.