OT: One-way IMAP sync tool?

[Sebastian Spaeth]

On Sun, 12 Dec 2010 17:52:46 +0000, seanh <snhmnd at gmail.com> wrote:
> Does there exist a tool for doing a one-way IMAP->maildir sync?
 
> I know that this has been asked on this list before, but fetchmail was the only
> recommendation and fetchmail is not a sync tool, it just downloads email. For
> example, if I delete an email from the IMAP server then the next time I
> synchronise I want that email to be deleted from the maildir also. But I never
> want changes to be propagated from maildir to IMAP, I'm using the maildir as a
> backup only. In other words I want to do a one-way, incremental IMAP->maildir
> sync with deletes.
> 
> I can't find a suitable tool. Seems the best option might be to use offlineimap
> and just hope that no unwanted changes get propagated from maildir to IMAP,
> either because of a bug in offlineimap or because some unwanted change has
> somehow occurred in the maildir.

offlineimap plus marking the some IMAP folders read-only to avoid making
changes there?

Or, to extend offlineimap to only do one-way changes, which would not be
hard to achieve.

Sebastian